Home / 31,039.11-42,834.15-16,891.92

Finding the Fourth Proportional to 31,039.11, 42,834.15 and 16,891.92

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Solution

The fourth proportional to 31,039.11, 42,834.15 and 16,891.92 is: 23,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,039.11 : 42,834.15 = 16,891.92 : x
  2. Step 2: Convert to fraction form
    31,039.11/42,834.15 = 16,891.92/x
  3. Step 3: Cross multiply
    31,039.11x = 42,834.15 × 16,891.92
  4. Step 4: Simplify right side
    31,039.11x = 723,551,035.07
  5. Step 5: Solve for x
    x = 723,551,035.07/31,039.11
  6. Step 6: Final answer
    x = 23,310.95

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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.