Home / 21,521.71-29,703.49-17,930.98

Finding the Fourth Proportional to 21,521.71, 29,703.49 and 17,930.98

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Solution

The fourth proportional to 21,521.71, 29,703.49 and 17,930.98 is: 24,747.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.71 : 29,703.49 = 17,930.98 : x
  2. Step 2: Convert to fraction form
    21,521.71/29,703.49 = 17,930.98/x
  3. Step 3: Cross multiply
    21,521.71x = 29,703.49 × 17,930.98
  4. Step 4: Simplify right side
    21,521.71x = 532,612,685.12
  5. Step 5: Solve for x
    x = 532,612,685.12/21,521.71
  6. Step 6: Final answer
    x = 24,747.69

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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.