Home / 15,007.12-20,711.28-8,294.32

Finding the Fourth Proportional to 15,007.12, 20,711.28 and 8,294.32

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Solution

The fourth proportional to 15,007.12, 20,711.28 and 8,294.32 is: 11,446.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.12 : 20,711.28 = 8,294.32 : x
  2. Step 2: Convert to fraction form
    15,007.12/20,711.28 = 8,294.32/x
  3. Step 3: Cross multiply
    15,007.12x = 20,711.28 × 8,294.32
  4. Step 4: Simplify right side
    15,007.12x = 171,785,983.93
  5. Step 5: Solve for x
    x = 171,785,983.93/15,007.12
  6. Step 6: Final answer
    x = 11,446.97

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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.