Home / 18,987.92-28,487.64-13,451.97

Finding the Fourth Proportional to 18,987.92, 28,487.64 and 13,451.97

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Solution

The fourth proportional to 18,987.92, 28,487.64 and 13,451.97 is: 20,182.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.92 : 28,487.64 = 13,451.97 : x
  2. Step 2: Convert to fraction form
    18,987.92/28,487.64 = 13,451.97/x
  3. Step 3: Cross multiply
    18,987.92x = 28,487.64 × 13,451.97
  4. Step 4: Simplify right side
    18,987.92x = 383,214,878.65
  5. Step 5: Solve for x
    x = 383,214,878.65/18,987.92
  6. Step 6: Final answer
    x = 20,182.04

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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.