Home / 21,648.97-29,864.57-13,148.83

Finding the Fourth Proportional to 21,648.97, 29,864.57 and 13,148.83

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Solution

The fourth proportional to 21,648.97, 29,864.57 and 13,148.83 is: 18,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.97 : 29,864.57 = 13,148.83 : x
  2. Step 2: Convert to fraction form
    21,648.97/29,864.57 = 13,148.83/x
  3. Step 3: Cross multiply
    21,648.97x = 29,864.57 × 13,148.83
  4. Step 4: Simplify right side
    21,648.97x = 392,684,153.95
  5. Step 5: Solve for x
    x = 392,684,153.95/21,648.97
  6. Step 6: Final answer
    x = 18,138.70

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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.