Home / 31,135.67-42,968.16-17,708.85

Finding the Fourth Proportional to 31,135.67, 42,968.16 and 17,708.85

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Solution

The fourth proportional to 31,135.67, 42,968.16 and 17,708.85 is: 24,438.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,135.67 : 42,968.16 = 17,708.85 : x
  2. Step 2: Convert to fraction form
    31,135.67/42,968.16 = 17,708.85/x
  3. Step 3: Cross multiply
    31,135.67x = 42,968.16 × 17,708.85
  4. Step 4: Simplify right side
    31,135.67x = 760,916,766.62
  5. Step 5: Solve for x
    x = 760,916,766.62/31,135.67
  6. Step 6: Final answer
    x = 24,438.75

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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.