Home / 31,086.12-42,898.86-16,938.66

Finding the Fourth Proportional to 31,086.12, 42,898.86 and 16,938.66

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Solution

The fourth proportional to 31,086.12, 42,898.86 and 16,938.66 is: 23,375.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,086.12 : 42,898.86 = 16,938.66 : x
  2. Step 2: Convert to fraction form
    31,086.12/42,898.86 = 16,938.66/x
  3. Step 3: Cross multiply
    31,086.12x = 42,898.86 × 16,938.66
  4. Step 4: Simplify right side
    31,086.12x = 726,649,203.93
  5. Step 5: Solve for x
    x = 726,649,203.93/31,086.12
  6. Step 6: Final answer
    x = 23,375.36

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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.