Home / 27,720.90-41,581.35-18,863.55

Finding the Fourth Proportional to 27,720.90, 41,581.35 and 18,863.55

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Solution

The fourth proportional to 27,720.90, 41,581.35 and 18,863.55 is: 28,295.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.90 : 41,581.35 = 18,863.55 : x
  2. Step 2: Convert to fraction form
    27,720.90/41,581.35 = 18,863.55/x
  3. Step 3: Cross multiply
    27,720.90x = 41,581.35 × 18,863.55
  4. Step 4: Simplify right side
    27,720.90x = 784,371,874.79
  5. Step 5: Solve for x
    x = 784,371,874.79/27,720.90
  6. Step 6: Final answer
    x = 28,295.33

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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.