Home / 31,015.13-42,800.87-16,868.27

Finding the Fourth Proportional to 31,015.13, 42,800.87 and 16,868.27

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Solution

The fourth proportional to 31,015.13, 42,800.87 and 16,868.27 is: 23,278.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,015.13 : 42,800.87 = 16,868.27 : x
  2. Step 2: Convert to fraction form
    31,015.13/42,800.87 = 16,868.27/x
  3. Step 3: Cross multiply
    31,015.13x = 42,800.87 × 16,868.27
  4. Step 4: Simplify right side
    31,015.13x = 721,976,780.57
  5. Step 5: Solve for x
    x = 721,976,780.57/31,015.13
  6. Step 6: Final answer
    x = 23,278.22

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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.