Home / 31,014.80-42,799.56-16,868.24

Finding the Fourth Proportional to 31,014.80, 42,799.56 and 16,868.24

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Solution

The fourth proportional to 31,014.80, 42,799.56 and 16,868.24 is: 23,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,014.80 : 42,799.56 = 16,868.24 : x
  2. Step 2: Convert to fraction form
    31,014.80/42,799.56 = 16,868.24/x
  3. Step 3: Cross multiply
    31,014.80x = 42,799.56 × 16,868.24
  4. Step 4: Simplify right side
    31,014.80x = 721,953,249.97
  5. Step 5: Solve for x
    x = 721,953,249.97/31,014.80
  6. Step 6: Final answer
    x = 23,277.70

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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.