Home / 12,482.28-18,723.36-3,717.20

Finding the Fourth Proportional to 12,482.28, 18,723.36 and 3,717.20

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Solution

The fourth proportional to 12,482.28, 18,723.36 and 3,717.20 is: 5,575.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.28 : 18,723.36 = 3,717.20 : x
  2. Step 2: Convert to fraction form
    12,482.28/18,723.36 = 3,717.20/x
  3. Step 3: Cross multiply
    12,482.28x = 18,723.36 × 3,717.20
  4. Step 4: Simplify right side
    12,482.28x = 69,598,473.79
  5. Step 5: Solve for x
    x = 69,598,473.79/12,482.28
  6. Step 6: Final answer
    x = 5,575.78

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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.