Home / 31,391.20-43,309.29-17,777.38

Finding the Fourth Proportional to 31,391.20, 43,309.29 and 17,777.38

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Solution

The fourth proportional to 31,391.20, 43,309.29 and 17,777.38 is: 24,526.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.20 : 43,309.29 = 17,777.38 : x
  2. Step 2: Convert to fraction form
    31,391.20/43,309.29 = 17,777.38/x
  3. Step 3: Cross multiply
    31,391.20x = 43,309.29 × 17,777.38
  4. Step 4: Simplify right side
    31,391.20x = 769,925,705.86
  5. Step 5: Solve for x
    x = 769,925,705.86/31,391.20
  6. Step 6: Final answer
    x = 24,526.80

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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.