Home / 15,591.08-21,515.76-8,517.62

Finding the Fourth Proportional to 15,591.08, 21,515.76 and 8,517.62

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Solution

The fourth proportional to 15,591.08, 21,515.76 and 8,517.62 is: 11,754.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.08 : 21,515.76 = 8,517.62 : x
  2. Step 2: Convert to fraction form
    15,591.08/21,515.76 = 8,517.62/x
  3. Step 3: Cross multiply
    15,591.08x = 21,515.76 × 8,517.62
  4. Step 4: Simplify right side
    15,591.08x = 183,262,960.11
  5. Step 5: Solve for x
    x = 183,262,960.11/15,591.08
  6. Step 6: Final answer
    x = 11,754.35

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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.