Home / 15,471.07-21,350.10-8,397.49

Finding the Fourth Proportional to 15,471.07, 21,350.10 and 8,397.49

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Solution

The fourth proportional to 15,471.07, 21,350.10 and 8,397.49 is: 11,588.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.07 : 21,350.10 = 8,397.49 : x
  2. Step 2: Convert to fraction form
    15,471.07/21,350.10 = 8,397.49/x
  3. Step 3: Cross multiply
    15,471.07x = 21,350.10 × 8,397.49
  4. Step 4: Simplify right side
    15,471.07x = 179,287,251.25
  5. Step 5: Solve for x
    x = 179,287,251.25/15,471.07
  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.