Home / 20,470.64-28,250.96-11,519.04

Finding the Fourth Proportional to 20,470.64, 28,250.96 and 11,519.04

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Solution

The fourth proportional to 20,470.64, 28,250.96 and 11,519.04 is: 15,897.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.64 : 28,250.96 = 11,519.04 : x
  2. Step 2: Convert to fraction form
    20,470.64/28,250.96 = 11,519.04/x
  3. Step 3: Cross multiply
    20,470.64x = 28,250.96 × 11,519.04
  4. Step 4: Simplify right side
    20,470.64x = 325,423,938.28
  5. Step 5: Solve for x
    x = 325,423,938.28/20,470.64
  6. Step 6: Final answer
    x = 15,897.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.