Home / 15,531.40-21,434.34-9,242.92

Finding the Fourth Proportional to 15,531.40, 21,434.34 and 9,242.92

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Solution

The fourth proportional to 15,531.40, 21,434.34 and 9,242.92 is: 12,755.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.40 : 21,434.34 = 9,242.92 : x
  2. Step 2: Convert to fraction form
    15,531.40/21,434.34 = 9,242.92/x
  3. Step 3: Cross multiply
    15,531.40x = 21,434.34 × 9,242.92
  4. Step 4: Simplify right side
    15,531.40x = 198,115,889.87
  5. Step 5: Solve for x
    x = 198,115,889.87/15,531.40
  6. Step 6: Final answer
    x = 12,755.83

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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.