Home / 15,691.10-21,649.85-8,885.27

Finding the Fourth Proportional to 15,691.10, 21,649.85 and 8,885.27

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Solution

The fourth proportional to 15,691.10, 21,649.85 and 8,885.27 is: 12,259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691.10 : 21,649.85 = 8,885.27 : x
  2. Step 2: Convert to fraction form
    15,691.10/21,649.85 = 8,885.27/x
  3. Step 3: Cross multiply
    15,691.10x = 21,649.85 × 8,885.27
  4. Step 4: Simplify right side
    15,691.10x = 192,364,805.73
  5. Step 5: Solve for x
    x = 192,364,805.73/15,691.10
  6. Step 6: Final answer
    x = 12,259.49

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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.