Home / 31,604.92-43,604.33-20,855.13

Finding the Fourth Proportional to 31,604.92, 43,604.33 and 20,855.13

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Solution

The fourth proportional to 31,604.92, 43,604.33 and 20,855.13 is: 28,773.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,604.92 : 43,604.33 = 20,855.13 : x
  2. Step 2: Convert to fraction form
    31,604.92/43,604.33 = 20,855.13/x
  3. Step 3: Cross multiply
    31,604.92x = 43,604.33 × 20,855.13
  4. Step 4: Simplify right side
    31,604.92x = 909,373,825.56
  5. Step 5: Solve for x
    x = 909,373,825.56/31,604.92
  6. Step 6: Final answer
    x = 28,773.18

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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.