Home / 31,778.17-43,853.74-18,350.66

Finding the Fourth Proportional to 31,778.17, 43,853.74 and 18,350.66

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Solution

The fourth proportional to 31,778.17, 43,853.74 and 18,350.66 is: 25,323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,778.17 : 43,853.74 = 18,350.66 : x
  2. Step 2: Convert to fraction form
    31,778.17/43,853.74 = 18,350.66/x
  3. Step 3: Cross multiply
    31,778.17x = 43,853.74 × 18,350.66
  4. Step 4: Simplify right side
    31,778.17x = 804,745,136.23
  5. Step 5: Solve for x
    x = 804,745,136.23/31,778.17
  6. Step 6: Final answer
    x = 25,323.84

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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.