Home / 21,521.92-29,708.67-13,562.59

Finding the Fourth Proportional to 21,521.92, 29,708.67 and 13,562.59

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Solution

The fourth proportional to 21,521.92, 29,708.67 and 13,562.59 is: 18,721.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.92 : 29,708.67 = 13,562.59 : x
  2. Step 2: Convert to fraction form
    21,521.92/29,708.67 = 13,562.59/x
  3. Step 3: Cross multiply
    21,521.92x = 29,708.67 × 13,562.59
  4. Step 4: Simplify right side
    21,521.92x = 402,926,510.66
  5. Step 5: Solve for x
    x = 402,926,510.66/21,521.92
  6. Step 6: Final answer
    x = 18,721.68

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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.