Home / 10,670.24-15,979.44-8,199.20

Finding the Fourth Proportional to 10,670.24, 15,979.44 and 8,199.20

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Solution

The fourth proportional to 10,670.24, 15,979.44 and 8,199.20 is: 12,278.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,670.24 : 15,979.44 = 8,199.20 : x
  2. Step 2: Convert to fraction form
    10,670.24/15,979.44 = 8,199.20/x
  3. Step 3: Cross multiply
    10,670.24x = 15,979.44 × 8,199.20
  4. Step 4: Simplify right side
    10,670.24x = 131,018,624.45
  5. Step 5: Solve for x
    x = 131,018,624.45/10,670.24
  6. Step 6: Final answer
    x = 12,278.88

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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.