Home / 18,612.72-27,886.55-15,512.65

Finding the Fourth Proportional to 18,612.72, 27,886.55 and 15,512.65

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Solution

The fourth proportional to 18,612.72, 27,886.55 and 15,512.65 is: 23,241.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.72 : 27,886.55 = 15,512.65 : x
  2. Step 2: Convert to fraction form
    18,612.72/27,886.55 = 15,512.65/x
  3. Step 3: Cross multiply
    18,612.72x = 27,886.55 × 15,512.65
  4. Step 4: Simplify right side
    18,612.72x = 432,594,142.58
  5. Step 5: Solve for x
    x = 432,594,142.58/18,612.72
  6. Step 6: Final answer
    x = 23,241.86

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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.