Home / 15,531.57-21,434.09-9,242.73

Finding the Fourth Proportional to 15,531.57, 21,434.09 and 9,242.73

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Solution

The fourth proportional to 15,531.57, 21,434.09 and 9,242.73 is: 12,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.57 : 21,434.09 = 9,242.73 : x
  2. Step 2: Convert to fraction form
    15,531.57/21,434.09 = 9,242.73/x
  3. Step 3: Cross multiply
    15,531.57x = 21,434.09 × 9,242.73
  4. Step 4: Simplify right side
    15,531.57x = 198,109,460.45
  5. Step 5: Solve for x
    x = 198,109,460.45/15,531.57
  6. Step 6: Final answer
    x = 12,755.28

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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.