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Finding the Fourth Proportional to 11,451.68, 17,164.20 and 9,375.20

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Solution

The fourth proportional to 11,451.68, 17,164.20 and 9,375.20 is: 14,051.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,451.68 : 17,164.20 = 9,375.20 : x
  2. Step 2: Convert to fraction form
    11,451.68/17,164.20 = 9,375.20/x
  3. Step 3: Cross multiply
    11,451.68x = 17,164.20 × 9,375.20
  4. Step 4: Simplify right side
    11,451.68x = 160,917,807.84
  5. Step 5: Solve for x
    x = 160,917,807.84/11,451.68
  6. Step 6: Final answer
    x = 14,051.90

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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.