Home / 13,747.60-20,621.40-8,822.80

Finding the Fourth Proportional to 13,747.60, 20,621.40 and 8,822.80

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Solution

The fourth proportional to 13,747.60, 20,621.40 and 8,822.80 is: 13,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.60 : 20,621.40 = 8,822.80 : x
  2. Step 2: Convert to fraction form
    13,747.60/20,621.40 = 8,822.80/x
  3. Step 3: Cross multiply
    13,747.60x = 20,621.40 × 8,822.80
  4. Step 4: Simplify right side
    13,747.60x = 181,938,487.92
  5. Step 5: Solve for x
    x = 181,938,487.92/13,747.60
  6. Step 6: Final answer
    x = 13,234.20

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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.