Home / 20,708.57-31,062.95-8,860.61

Finding the Fourth Proportional to 20,708.57, 31,062.95 and 8,860.61

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Solution

The fourth proportional to 20,708.57, 31,062.95 and 8,860.61 is: 13,290.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.57 : 31,062.95 = 8,860.61 : x
  2. Step 2: Convert to fraction form
    20,708.57/31,062.95 = 8,860.61/x
  3. Step 3: Cross multiply
    20,708.57x = 31,062.95 × 8,860.61
  4. Step 4: Simplify right side
    20,708.57x = 275,236,485.78
  5. Step 5: Solve for x
    x = 275,236,485.78/20,708.57
  6. Step 6: Final answer
    x = 13,290.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.