Home / 18,723.74-28,085.61-12,862.58

Finding the Fourth Proportional to 18,723.74, 28,085.61 and 12,862.58

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Solution

The fourth proportional to 18,723.74, 28,085.61 and 12,862.58 is: 19,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.74 : 28,085.61 = 12,862.58 : x
  2. Step 2: Convert to fraction form
    18,723.74/28,085.61 = 12,862.58/x
  3. Step 3: Cross multiply
    18,723.74x = 28,085.61 × 12,862.58
  4. Step 4: Simplify right side
    18,723.74x = 361,253,405.47
  5. Step 5: Solve for x
    x = 361,253,405.47/18,723.74
  6. Step 6: Final answer
    x = 19,293.87

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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.