Home / 10,245.78-15,350.04-7,119.18

Finding the Fourth Proportional to 10,245.78, 15,350.04 and 7,119.18

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Solution

The fourth proportional to 10,245.78, 15,350.04 and 7,119.18 is: 10,665.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,245.78 : 15,350.04 = 7,119.18 : x
  2. Step 2: Convert to fraction form
    10,245.78/15,350.04 = 7,119.18/x
  3. Step 3: Cross multiply
    10,245.78x = 15,350.04 × 7,119.18
  4. Step 4: Simplify right side
    10,245.78x = 109,279,697.77
  5. Step 5: Solve for x
    x = 109,279,697.77/10,245.78
  6. Step 6: Final answer
    x = 10,665.83

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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.