Home / 21,250.89-29,326.78-11,691.02

Finding the Fourth Proportional to 21,250.89, 29,326.78 and 11,691.02

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Solution

The fourth proportional to 21,250.89, 29,326.78 and 11,691.02 is: 16,133.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.89 : 29,326.78 = 11,691.02 : x
  2. Step 2: Convert to fraction form
    21,250.89/29,326.78 = 11,691.02/x
  3. Step 3: Cross multiply
    21,250.89x = 29,326.78 × 11,691.02
  4. Step 4: Simplify right side
    21,250.89x = 342,859,971.52
  5. Step 5: Solve for x
    x = 342,859,971.52/21,250.89
  6. Step 6: Final answer
    x = 16,133.91

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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.