Home / 31,143.38-42,977.27-16,996.33

Finding the Fourth Proportional to 31,143.38, 42,977.27 and 16,996.33

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Solution

The fourth proportional to 31,143.38, 42,977.27 and 16,996.33 is: 23,454.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,143.38 : 42,977.27 = 16,996.33 : x
  2. Step 2: Convert to fraction form
    31,143.38/42,977.27 = 16,996.33/x
  3. Step 3: Cross multiply
    31,143.38x = 42,977.27 × 16,996.33
  4. Step 4: Simplify right side
    31,143.38x = 730,455,563.55
  5. Step 5: Solve for x
    x = 730,455,563.55/31,143.38
  6. Step 6: Final answer
    x = 23,454.60

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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.