Home / 31,016.36-42,801.35-16,869.22

Finding the Fourth Proportional to 31,016.36, 42,801.35 and 16,869.22

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Solution

The fourth proportional to 31,016.36, 42,801.35 and 16,869.22 is: 23,278.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,016.36 : 42,801.35 = 16,869.22 : x
  2. Step 2: Convert to fraction form
    31,016.36/42,801.35 = 16,869.22/x
  3. Step 3: Cross multiply
    31,016.36x = 42,801.35 × 16,869.22
  4. Step 4: Simplify right side
    31,016.36x = 722,025,198.10
  5. Step 5: Solve for x
    x = 722,025,198.10/31,016.36
  6. Step 6: Final answer
    x = 23,278.85

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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.