Home / 21,569.91-29,761.88-12,615.66

Finding the Fourth Proportional to 21,569.91, 29,761.88 and 12,615.66

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Solution

The fourth proportional to 21,569.91, 29,761.88 and 12,615.66 is: 17,406.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,569.91 : 29,761.88 = 12,615.66 : x
  2. Step 2: Convert to fraction form
    21,569.91/29,761.88 = 12,615.66/x
  3. Step 3: Cross multiply
    21,569.91x = 29,761.88 × 12,615.66
  4. Step 4: Simplify right side
    21,569.91x = 375,465,822.73
  5. Step 5: Solve for x
    x = 375,465,822.73/21,569.91
  6. Step 6: Final answer
    x = 17,406.93

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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.