Home / 15,591.32-21,516.01-8,517.75

Finding the Fourth Proportional to 15,591.32, 21,516.01 and 8,517.75

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Solution

The fourth proportional to 15,591.32, 21,516.01 and 8,517.75 is: 11,754.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.32 : 21,516.01 = 8,517.75 : x
  2. Step 2: Convert to fraction form
    15,591.32/21,516.01 = 8,517.75/x
  3. Step 3: Cross multiply
    15,591.32x = 21,516.01 × 8,517.75
  4. Step 4: Simplify right side
    15,591.32x = 183,267,994.18
  5. Step 5: Solve for x
    x = 183,267,994.18/15,591.32
  6. Step 6: Final answer
    x = 11,754.49

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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.