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Finding the Fourth Proportional to 15,471.52, 21,350.64 and 8,397.52

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Solution

The fourth proportional to 15,471.52, 21,350.64 and 8,397.52 is: 11,588.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.52 : 21,350.64 = 8,397.52 : x
  2. Step 2: Convert to fraction form
    15,471.52/21,350.64 = 8,397.52/x
  3. Step 3: Cross multiply
    15,471.52x = 21,350.64 × 8,397.52
  4. Step 4: Simplify right side
    15,471.52x = 179,292,426.41
  5. Step 5: Solve for x
    x = 179,292,426.41/15,471.52
  6. Step 6: Final answer
    x = 11,588.55

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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.