Home / 20,747.60-31,105.56-10,366.64

Finding the Fourth Proportional to 20,747.60, 31,105.56 and 10,366.64

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Solution

The fourth proportional to 20,747.60, 31,105.56 and 10,366.64 is: 15,542.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.60 : 31,105.56 = 10,366.64 : x
  2. Step 2: Convert to fraction form
    20,747.60/31,105.56 = 10,366.64/x
  3. Step 3: Cross multiply
    20,747.60x = 31,105.56 × 10,366.64
  4. Step 4: Simplify right side
    20,747.60x = 322,460,142.52
  5. Step 5: Solve for x
    x = 322,460,142.52/20,747.60
  6. Step 6: Final answer
    x = 15,542.05

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1.5x scale

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.