Home / 31,087.13-42,900.23-16,939.97

Finding the Fourth Proportional to 31,087.13, 42,900.23 and 16,939.97

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Solution

The fourth proportional to 31,087.13, 42,900.23 and 16,939.97 is: 23,377.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,087.13 : 42,900.23 = 16,939.97 : x
  2. Step 2: Convert to fraction form
    31,087.13/42,900.23 = 16,939.97/x
  3. Step 3: Cross multiply
    31,087.13x = 42,900.23 × 16,939.97
  4. Step 4: Simplify right side
    31,087.13x = 726,728,597.92
  5. Step 5: Solve for x
    x = 726,728,597.92/31,087.13
  6. Step 6: Final answer
    x = 23,377.16

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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.