Home / 15,677.28-21,634.50-8,603.52

Finding the Fourth Proportional to 15,677.28, 21,634.50 and 8,603.52

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Solution

The fourth proportional to 15,677.28, 21,634.50 and 8,603.52 is: 11,872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,677.28 : 21,634.50 = 8,603.52 : x
  2. Step 2: Convert to fraction form
    15,677.28/21,634.50 = 8,603.52/x
  3. Step 3: Cross multiply
    15,677.28x = 21,634.50 × 8,603.52
  4. Step 4: Simplify right side
    15,677.28x = 186,132,853.44
  5. Step 5: Solve for x
    x = 186,132,853.44/15,677.28
  6. Step 6: Final answer
    x = 11,872.78

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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.