Home / 15,105.60-20,855.88-11,562.48

Finding the Fourth Proportional to 15,105.60, 20,855.88 and 11,562.48

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Solution

The fourth proportional to 15,105.60, 20,855.88 and 11,562.48 is: 15,963.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,105.60 : 20,855.88 = 11,562.48 : x
  2. Step 2: Convert to fraction form
    15,105.60/20,855.88 = 11,562.48/x
  3. Step 3: Cross multiply
    15,105.60x = 20,855.88 × 11,562.48
  4. Step 4: Simplify right side
    15,105.60x = 241,145,695.38
  5. Step 5: Solve for x
    x = 241,145,695.38/15,105.60
  6. Step 6: Final answer
    x = 15,963.99

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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.