Home / 18,753.18-28,120.20-6,268.74

Finding the Fourth Proportional to 18,753.18, 28,120.20 and 6,268.74

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Solution

The fourth proportional to 18,753.18, 28,120.20 and 6,268.74 is: 9,399.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.18 : 28,120.20 = 6,268.74 : x
  2. Step 2: Convert to fraction form
    18,753.18/28,120.20 = 6,268.74/x
  3. Step 3: Cross multiply
    18,753.18x = 28,120.20 × 6,268.74
  4. Step 4: Simplify right side
    18,753.18x = 176,278,222.55
  5. Step 5: Solve for x
    x = 176,278,222.55/18,753.18
  6. Step 6: Final answer
    x = 9,399.91

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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.