Home / 31,015.92-42,801.48-16,868.64

Finding the Fourth Proportional to 31,015.92, 42,801.48 and 16,868.64

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Solution

The fourth proportional to 31,015.92, 42,801.48 and 16,868.64 is: 23,278.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,015.92 : 42,801.48 = 16,868.64 : x
  2. Step 2: Convert to fraction form
    31,015.92/42,801.48 = 16,868.64/x
  3. Step 3: Cross multiply
    31,015.92x = 42,801.48 × 16,868.64
  4. Step 4: Simplify right side
    31,015.92x = 722,002,757.59
  5. Step 5: Solve for x
    x = 722,002,757.59/31,015.92
  6. Step 6: Final answer
    x = 23,278.46

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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.