Home / 21,587.38-29,791.13-12,156.26

Finding the Fourth Proportional to 21,587.38, 29,791.13 and 12,156.26

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Solution

The fourth proportional to 21,587.38, 29,791.13 and 12,156.26 is: 16,775.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587.38 : 29,791.13 = 12,156.26 : x
  2. Step 2: Convert to fraction form
    21,587.38/29,791.13 = 12,156.26/x
  3. Step 3: Cross multiply
    21,587.38x = 29,791.13 × 12,156.26
  4. Step 4: Simplify right side
    21,587.38x = 362,148,721.97
  5. Step 5: Solve for x
    x = 362,148,721.97/21,587.38
  6. Step 6: Final answer
    x = 16,775.95

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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.