Home / 31,758.03-43,811.90-20,425.38

Finding the Fourth Proportional to 31,758.03, 43,811.90 and 20,425.38

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Solution

The fourth proportional to 31,758.03, 43,811.90 and 20,425.38 is: 28,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,758.03 : 43,811.90 = 20,425.38 : x
  2. Step 2: Convert to fraction form
    31,758.03/43,811.90 = 20,425.38/x
  3. Step 3: Cross multiply
    31,758.03x = 43,811.90 × 20,425.38
  4. Step 4: Simplify right side
    31,758.03x = 894,874,603.90
  5. Step 5: Solve for x
    x = 894,874,603.90/31,758.03
  6. Step 6: Final answer
    x = 28,177.90

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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.