Home / 14,387.20-21,537.60-8,540.80

Finding the Fourth Proportional to 14,387.20, 21,537.60 and 8,540.80

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Solution

The fourth proportional to 14,387.20, 21,537.60 and 8,540.80 is: 12,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,387.20 : 21,537.60 = 8,540.80 : x
  2. Step 2: Convert to fraction form
    14,387.20/21,537.60 = 8,540.80/x
  3. Step 3: Cross multiply
    14,387.20x = 21,537.60 × 8,540.80
  4. Step 4: Simplify right side
    14,387.20x = 183,948,334.08
  5. Step 5: Solve for x
    x = 183,948,334.08/14,387.20
  6. Step 6: Final answer
    x = 12,785.55

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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.