Home / 10,618.40-15,917.52-5,349.92

Finding the Fourth Proportional to 10,618.40, 15,917.52 and 5,349.92

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Solution

The fourth proportional to 10,618.40, 15,917.52 and 5,349.92 is: 8,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,618.40 : 15,917.52 = 5,349.92 : x
  2. Step 2: Convert to fraction form
    10,618.40/15,917.52 = 5,349.92/x
  3. Step 3: Cross multiply
    10,618.40x = 15,917.52 × 5,349.92
  4. Step 4: Simplify right side
    10,618.40x = 85,157,458.60
  5. Step 5: Solve for x
    x = 85,157,458.60/10,618.40
  6. Step 6: Final answer
    x = 8,019.80

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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.