Home / 30,070.55-45,127.70-13,449.35

Finding the Fourth Proportional to 30,070.55, 45,127.70 and 13,449.35

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Solution

The fourth proportional to 30,070.55, 45,127.70 and 13,449.35 is: 20,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,070.55 : 45,127.70 = 13,449.35 : x
  2. Step 2: Convert to fraction form
    30,070.55/45,127.70 = 13,449.35/x
  3. Step 3: Cross multiply
    30,070.55x = 45,127.70 × 13,449.35
  4. Step 4: Simplify right side
    30,070.55x = 606,937,939.11
  5. Step 5: Solve for x
    x = 606,937,939.11/30,070.55
  6. Step 6: Final answer
    x = 20,183.80

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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.