Home / 10,832.80-16,249.20-7,139.20

Finding the Fourth Proportional to 10,832.80, 16,249.20 and 7,139.20

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Solution

The fourth proportional to 10,832.80, 16,249.20 and 7,139.20 is: 10,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,832.80 : 16,249.20 = 7,139.20 : x
  2. Step 2: Convert to fraction form
    10,832.80/16,249.20 = 7,139.20/x
  3. Step 3: Cross multiply
    10,832.80x = 16,249.20 × 7,139.20
  4. Step 4: Simplify right side
    10,832.80x = 116,006,288.64
  5. Step 5: Solve for x
    x = 116,006,288.64/10,832.80
  6. Step 6: Final answer
    x = 10,708.80

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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.