Home / 13,387.58-20,076.74-5,487.85

Finding the Fourth Proportional to 13,387.58, 20,076.74 and 5,487.85

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Solution

The fourth proportional to 13,387.58, 20,076.74 and 5,487.85 is: 8,229.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.58 : 20,076.74 = 5,487.85 : x
  2. Step 2: Convert to fraction form
    13,387.58/20,076.74 = 5,487.85/x
  3. Step 3: Cross multiply
    13,387.58x = 20,076.74 × 5,487.85
  4. Step 4: Simplify right side
    13,387.58x = 110,178,140.41
  5. Step 5: Solve for x
    x = 110,178,140.41/13,387.58
  6. Step 6: Final answer
    x = 8,229.88

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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.