Home / 31,753.86-43,800.48-20,438.10

Finding the Fourth Proportional to 31,753.86, 43,800.48 and 20,438.10

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Solution

The fourth proportional to 31,753.86, 43,800.48 and 20,438.10 is: 28,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,753.86 : 43,800.48 = 20,438.10 : x
  2. Step 2: Convert to fraction form
    31,753.86/43,800.48 = 20,438.10/x
  3. Step 3: Cross multiply
    31,753.86x = 43,800.48 × 20,438.10
  4. Step 4: Simplify right side
    31,753.86x = 895,198,590.29
  5. Step 5: Solve for x
    x = 895,198,590.29/31,753.86
  6. Step 6: Final answer
    x = 28,191.80

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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.