Home / 15,591.62-21,516.90-8,518.16

Finding the Fourth Proportional to 15,591.62, 21,516.90 and 8,518.16

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Solution

The fourth proportional to 15,591.62, 21,516.90 and 8,518.16 is: 11,755.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.62 : 21,516.90 = 8,518.16 : x
  2. Step 2: Convert to fraction form
    15,591.62/21,516.90 = 8,518.16/x
  3. Step 3: Cross multiply
    15,591.62x = 21,516.90 × 8,518.16
  4. Step 4: Simplify right side
    15,591.62x = 183,284,396.90
  5. Step 5: Solve for x
    x = 183,284,396.90/15,591.62
  6. Step 6: Final answer
    x = 11,755.31

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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.