Home / 23,120.60-31,900.86-13,691.48

Finding the Fourth Proportional to 23,120.60, 31,900.86 and 13,691.48

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Solution

The fourth proportional to 23,120.60, 31,900.86 and 13,691.48 is: 18,890.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,120.60 : 31,900.86 = 13,691.48 : x
  2. Step 2: Convert to fraction form
    23,120.60/31,900.86 = 13,691.48/x
  3. Step 3: Cross multiply
    23,120.60x = 31,900.86 × 13,691.48
  4. Step 4: Simplify right side
    23,120.60x = 436,769,986.67
  5. Step 5: Solve for x
    x = 436,769,986.67/23,120.60
  6. Step 6: Final answer
    x = 18,890.95

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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.