Home / 20,199,133,197.20-30,298,699,795.80-18,821,638,125.20

Finding the Fourth Proportional to 20,199,133,197.20, 30,298,699,795.80 and 18,821,638,125.20

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Solution

The fourth proportional to 20,199,133,197.20, 30,298,699,795.80 and 18,821,638,125.20 is: 28,232,457,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199,133,197.20 : 30,298,699,795.80 = 18,821,638,125.20 : x
  2. Step 2: Convert to fraction form
    20,199,133,197.20/30,298,699,795.80 = 18,821,638,125.20/x
  3. Step 3: Cross multiply
    20,199,133,197.20x = 30,298,699,795.80 × 18,821,638,125.20
  4. Step 4: Simplify right side
    20,199,133,197.20x = 570,271,163,220,618,772,480
  5. Step 5: Solve for x
    x = 570,271,163,220,618,772,480/20,199,133,197.20
  6. Step 6: Final answer
    x = 28,232,457,187.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.