Home / 20,337.92-28,066.56-11,386.28

Finding the Fourth Proportional to 20,337.92, 28,066.56 and 11,386.28

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Solution

The fourth proportional to 20,337.92, 28,066.56 and 11,386.28 is: 15,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.92 : 28,066.56 = 11,386.28 : x
  2. Step 2: Convert to fraction form
    20,337.92/28,066.56 = 11,386.28/x
  3. Step 3: Cross multiply
    20,337.92x = 28,066.56 × 11,386.28
  4. Step 4: Simplify right side
    20,337.92x = 319,573,710.80
  5. Step 5: Solve for x
    x = 319,573,710.80/20,337.92
  6. Step 6: Final answer
    x = 15,713.20

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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.