Home / 31,565.28-43,525.92-21,495.36

Finding the Fourth Proportional to 31,565.28, 43,525.92 and 21,495.36

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Solution

The fourth proportional to 31,565.28, 43,525.92 and 21,495.36 is: 29,640.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,565.28 : 43,525.92 = 21,495.36 : x
  2. Step 2: Convert to fraction form
    31,565.28/43,525.92 = 21,495.36/x
  3. Step 3: Cross multiply
    31,565.28x = 43,525.92 × 21,495.36
  4. Step 4: Simplify right side
    31,565.28x = 935,605,319.73
  5. Step 5: Solve for x
    x = 935,605,319.73/31,565.28
  6. Step 6: Final answer
    x = 29,640.33

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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.