Home / 31,747.48-43,818.78-20,550.04

Finding the Fourth Proportional to 31,747.48, 43,818.78 and 20,550.04

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Solution

The fourth proportional to 31,747.48, 43,818.78 and 20,550.04 is: 28,363.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,747.48 : 43,818.78 = 20,550.04 : x
  2. Step 2: Convert to fraction form
    31,747.48/43,818.78 = 20,550.04/x
  3. Step 3: Cross multiply
    31,747.48x = 43,818.78 × 20,550.04
  4. Step 4: Simplify right side
    31,747.48x = 900,477,681.75
  5. Step 5: Solve for x
    x = 900,477,681.75/31,747.48
  6. Step 6: Final answer
    x = 28,363.75

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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.