Home / 11,231.28-15,500.60-9,339.61

Finding the Fourth Proportional to 11,231.28, 15,500.60 and 9,339.61

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Solution

The fourth proportional to 11,231.28, 15,500.60 and 9,339.61 is: 12,889.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,231.28 : 15,500.60 = 9,339.61 : x
  2. Step 2: Convert to fraction form
    11,231.28/15,500.60 = 9,339.61/x
  3. Step 3: Cross multiply
    11,231.28x = 15,500.60 × 9,339.61
  4. Step 4: Simplify right side
    11,231.28x = 144,769,558.77
  5. Step 5: Solve for x
    x = 144,769,558.77/11,231.28
  6. Step 6: Final answer
    x = 12,889.85

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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.