Home / 20,325.20-30,487.80-11,577.20

Finding the Fourth Proportional to 20,325.20, 30,487.80 and 11,577.20

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Solution

The fourth proportional to 20,325.20, 30,487.80 and 11,577.20 is: 17,365.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.20 : 30,487.80 = 11,577.20 : x
  2. Step 2: Convert to fraction form
    20,325.20/30,487.80 = 11,577.20/x
  3. Step 3: Cross multiply
    20,325.20x = 30,487.80 × 11,577.20
  4. Step 4: Simplify right side
    20,325.20x = 352,963,358.16
  5. Step 5: Solve for x
    x = 352,963,358.16/20,325.20
  6. Step 6: Final answer
    x = 17,365.80

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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.