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Finding the Fourth Proportional to 9,170.53, 13,728.44 and 9,013.79

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Solution

The fourth proportional to 9,170.53, 13,728.44 and 9,013.79 is: 13,493.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.53 : 13,728.44 = 9,013.79 : x
  2. Step 2: Convert to fraction form
    9,170.53/13,728.44 = 9,013.79/x
  3. Step 3: Cross multiply
    9,170.53x = 13,728.44 × 9,013.79
  4. Step 4: Simplify right side
    9,170.53x = 123,745,332.04
  5. Step 5: Solve for x
    x = 123,745,332.04/9,170.53
  6. Step 6: Final answer
    x = 13,493.81

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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.