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Finding the Fourth Proportional to 10,008.62, 15,000.79 and 7,351.49

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Solution

The fourth proportional to 10,008.62, 15,000.79 and 7,351.49 is: 11,018.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,008.62 : 15,000.79 = 7,351.49 : x
  2. Step 2: Convert to fraction form
    10,008.62/15,000.79 = 7,351.49/x
  3. Step 3: Cross multiply
    10,008.62x = 15,000.79 × 7,351.49
  4. Step 4: Simplify right side
    10,008.62x = 110,278,157.68
  5. Step 5: Solve for x
    x = 110,278,157.68/10,008.62
  6. Step 6: Final answer
    x = 11,018.32

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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.