Home / 15,677.28-21,634.29-8,603.55

Finding the Fourth Proportional to 15,677.28, 21,634.29 and 8,603.55

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Solution

The fourth proportional to 15,677.28, 21,634.29 and 8,603.55 is: 11,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,677.28 : 21,634.29 = 8,603.55 : x
  2. Step 2: Convert to fraction form
    15,677.28/21,634.29 = 8,603.55/x
  3. Step 3: Cross multiply
    15,677.28x = 21,634.29 × 8,603.55
  4. Step 4: Simplify right side
    15,677.28x = 186,131,695.73
  5. Step 5: Solve for x
    x = 186,131,695.73/15,677.28
  6. Step 6: Final answer
    x = 11,872.70

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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.