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Finding the Fourth Proportional to 9,165.70, 13,748.55 and 9,100.90

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Solution

The fourth proportional to 9,165.70, 13,748.55 and 9,100.90 is: 13,651.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.70 : 13,748.55 = 9,100.90 : x
  2. Step 2: Convert to fraction form
    9,165.70/13,748.55 = 9,100.90/x
  3. Step 3: Cross multiply
    9,165.70x = 13,748.55 × 9,100.90
  4. Step 4: Simplify right side
    9,165.70x = 125,124,178.70
  5. Step 5: Solve for x
    x = 125,124,178.70/9,165.70
  6. Step 6: Final answer
    x = 13,651.35

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Similar ratio
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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.