Home / 21,488.70-29,644.20-13,937.46

Finding the Fourth Proportional to 21,488.70, 29,644.20 and 13,937.46

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Solution

The fourth proportional to 21,488.70, 29,644.20 and 13,937.46 is: 19,227.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.70 : 29,644.20 = 13,937.46 : x
  2. Step 2: Convert to fraction form
    21,488.70/29,644.20 = 13,937.46/x
  3. Step 3: Cross multiply
    21,488.70x = 29,644.20 × 13,937.46
  4. Step 4: Simplify right side
    21,488.70x = 413,164,851.73
  5. Step 5: Solve for x
    x = 413,164,851.73/21,488.70
  6. Step 6: Final answer
    x = 19,227.08

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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.