Home / 13,363.20-18,438.48-8,056.80

Finding the Fourth Proportional to 13,363.20, 18,438.48 and 8,056.80

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Solution

The fourth proportional to 13,363.20, 18,438.48 and 8,056.80 is: 11,116.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.20 : 18,438.48 = 8,056.80 : x
  2. Step 2: Convert to fraction form
    13,363.20/18,438.48 = 8,056.80/x
  3. Step 3: Cross multiply
    13,363.20x = 18,438.48 × 8,056.80
  4. Step 4: Simplify right side
    13,363.20x = 148,555,145.66
  5. Step 5: Solve for x
    x = 148,555,145.66/13,363.20
  6. Step 6: Final answer
    x = 11,116.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.