Home / 28,451.79-42,673.97-8,728.70

Finding the Fourth Proportional to 28,451.79, 42,673.97 and 8,728.70

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Solution

The fourth proportional to 28,451.79, 42,673.97 and 8,728.70 is: 13,091.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.79 : 42,673.97 = 8,728.70 : x
  2. Step 2: Convert to fraction form
    28,451.79/42,673.97 = 8,728.70/x
  3. Step 3: Cross multiply
    28,451.79x = 42,673.97 × 8,728.70
  4. Step 4: Simplify right side
    28,451.79x = 372,488,024.93
  5. Step 5: Solve for x
    x = 372,488,024.93/28,451.79
  6. Step 6: Final answer
    x = 13,091.90

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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.