Home / 31,083.26-42,882.05-21,657.29

Finding the Fourth Proportional to 31,083.26, 42,882.05 and 21,657.29

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Solution

The fourth proportional to 31,083.26, 42,882.05 and 21,657.29 is: 29,878.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,083.26 : 42,882.05 = 21,657.29 : x
  2. Step 2: Convert to fraction form
    31,083.26/42,882.05 = 21,657.29/x
  3. Step 3: Cross multiply
    31,083.26x = 42,882.05 × 21,657.29
  4. Step 4: Simplify right side
    31,083.26x = 928,708,832.38
  5. Step 5: Solve for x
    x = 928,708,832.38/31,083.26
  6. Step 6: Final answer
    x = 29,878.11

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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.