Home / 11,451.24-15,807.96-8,331.12

Finding the Fourth Proportional to 11,451.24, 15,807.96 and 8,331.12

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Solution

The fourth proportional to 11,451.24, 15,807.96 and 8,331.12 is: 11,500.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,451.24 : 15,807.96 = 8,331.12 : x
  2. Step 2: Convert to fraction form
    11,451.24/15,807.96 = 8,331.12/x
  3. Step 3: Cross multiply
    11,451.24x = 15,807.96 × 8,331.12
  4. Step 4: Simplify right side
    11,451.24x = 131,698,011.72
  5. Step 5: Solve for x
    x = 131,698,011.72/11,451.24
  6. Step 6: Final answer
    x = 11,500.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.