Home / 11,319.91-15,617.19-8,342.85

Finding the Fourth Proportional to 11,319.91, 15,617.19 and 8,342.85

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Solution

The fourth proportional to 11,319.91, 15,617.19 and 8,342.85 is: 11,509.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.91 : 15,617.19 = 8,342.85 : x
  2. Step 2: Convert to fraction form
    11,319.91/15,617.19 = 8,342.85/x
  3. Step 3: Cross multiply
    11,319.91x = 15,617.19 × 8,342.85
  4. Step 4: Simplify right side
    11,319.91x = 130,291,873.59
  5. Step 5: Solve for x
    x = 130,291,873.59/11,319.91
  6. Step 6: Final answer
    x = 11,509.97

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Half scale
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Double scale
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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.