Home / 15,605.20-21,535.98-8,531.56

Finding the Fourth Proportional to 15,605.20, 21,535.98 and 8,531.56

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Solution

The fourth proportional to 15,605.20, 21,535.98 and 8,531.56 is: 11,773.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.20 : 21,535.98 = 8,531.56 : x
  2. Step 2: Convert to fraction form
    15,605.20/21,535.98 = 8,531.56/x
  3. Step 3: Cross multiply
    15,605.20x = 21,535.98 × 8,531.56
  4. Step 4: Simplify right side
    15,605.20x = 183,735,505.53
  5. Step 5: Solve for x
    x = 183,735,505.53/15,605.20
  6. Step 6: Final answer
    x = 11,773.99

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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.