Home / 31,122.53-42,949.13-16,975.61

Finding the Fourth Proportional to 31,122.53, 42,949.13 and 16,975.61

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Solution

The fourth proportional to 31,122.53, 42,949.13 and 16,975.61 is: 23,426.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.53 : 42,949.13 = 16,975.61 : x
  2. Step 2: Convert to fraction form
    31,122.53/42,949.13 = 16,975.61/x
  3. Step 3: Cross multiply
    31,122.53x = 42,949.13 × 16,975.61
  4. Step 4: Simplify right side
    31,122.53x = 729,087,381.10
  5. Step 5: Solve for x
    x = 729,087,381.10/31,122.53
  6. Step 6: Final answer
    x = 23,426.36

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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.