Home / 18,908.42-28,364.20-5,760.90

Finding the Fourth Proportional to 18,908.42, 28,364.20 and 5,760.90

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Solution

The fourth proportional to 18,908.42, 28,364.20 and 5,760.90 is: 8,641.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.42 : 28,364.20 = 5,760.90 : x
  2. Step 2: Convert to fraction form
    18,908.42/28,364.20 = 5,760.90/x
  3. Step 3: Cross multiply
    18,908.42x = 28,364.20 × 5,760.90
  4. Step 4: Simplify right side
    18,908.42x = 163,403,319.78
  5. Step 5: Solve for x
    x = 163,403,319.78/18,908.42
  6. Step 6: Final answer
    x = 8,641.83

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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.