Home / 31,092.36-42,862.16-21,517.65

Finding the Fourth Proportional to 31,092.36, 42,862.16 and 21,517.65

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Solution

The fourth proportional to 31,092.36, 42,862.16 and 21,517.65 is: 29,663.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,092.36 : 42,862.16 = 21,517.65 : x
  2. Step 2: Convert to fraction form
    31,092.36/42,862.16 = 21,517.65/x
  3. Step 3: Cross multiply
    31,092.36x = 42,862.16 × 21,517.65
  4. Step 4: Simplify right side
    31,092.36x = 922,293,010.92
  5. Step 5: Solve for x
    x = 922,293,010.92/31,092.36
  6. Step 6: Final answer
    x = 29,663.01

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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.