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Finding the Fourth Proportional to 15,007.97, 20,711.15 and 8,293.28

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Solution

The fourth proportional to 15,007.97, 20,711.15 and 8,293.28 is: 11,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.97 : 20,711.15 = 8,293.28 : x
  2. Step 2: Convert to fraction form
    15,007.97/20,711.15 = 8,293.28/x
  3. Step 3: Cross multiply
    15,007.97x = 20,711.15 × 8,293.28
  4. Step 4: Simplify right side
    15,007.97x = 171,763,221.05
  5. Step 5: Solve for x
    x = 171,763,221.05/15,007.97
  6. Step 6: Final answer
    x = 11,444.80

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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.