Home / 39,436.17-54,422-21,531.18

Finding the Fourth Proportional to 39,436.17, 54,422 and 21,531.18

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Solution

The fourth proportional to 39,436.17, 54,422 and 21,531.18 is: 29,713.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,436.17 : 54,422 = 21,531.18 : x
  2. Step 2: Convert to fraction form
    39,436.17/54,422 = 21,531.18/x
  3. Step 3: Cross multiply
    39,436.17x = 54,422 × 21,531.18
  4. Step 4: Simplify right side
    39,436.17x = 1,171,769,877.96
  5. Step 5: Solve for x
    x = 1,171,769,877.96/39,436.17
  6. Step 6: Final answer
    x = 29,713.08

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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.