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Finding the Fourth Proportional to 10,067.20, 15,100.80 and 7,475.20

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Solution

The fourth proportional to 10,067.20, 15,100.80 and 7,475.20 is: 11,212.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,067.20 : 15,100.80 = 7,475.20 : x
  2. Step 2: Convert to fraction form
    10,067.20/15,100.80 = 7,475.20/x
  3. Step 3: Cross multiply
    10,067.20x = 15,100.80 × 7,475.20
  4. Step 4: Simplify right side
    10,067.20x = 112,881,500.16
  5. Step 5: Solve for x
    x = 112,881,500.16/10,067.20
  6. Step 6: Final answer
    x = 11,212.80

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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.