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Finding the Fourth Proportional to 9,157.14, 13,721.22 and 6,959.16

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Solution

The fourth proportional to 9,157.14, 13,721.22 and 6,959.16 is: 10,427.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,157.14 : 13,721.22 = 6,959.16 : x
  2. Step 2: Convert to fraction form
    9,157.14/13,721.22 = 6,959.16/x
  3. Step 3: Cross multiply
    9,157.14x = 13,721.22 × 6,959.16
  4. Step 4: Simplify right side
    9,157.14x = 95,488,165.38
  5. Step 5: Solve for x
    x = 95,488,165.38/9,157.14
  6. Step 6: Final answer
    x = 10,427.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.