Home / 10,268.20-15,376.70-8,220.20

Finding the Fourth Proportional to 10,268.20, 15,376.70 and 8,220.20

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Solution

The fourth proportional to 10,268.20, 15,376.70 and 8,220.20 is: 12,309.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,268.20 : 15,376.70 = 8,220.20 : x
  2. Step 2: Convert to fraction form
    10,268.20/15,376.70 = 8,220.20/x
  3. Step 3: Cross multiply
    10,268.20x = 15,376.70 × 8,220.20
  4. Step 4: Simplify right side
    10,268.20x = 126,399,549.34
  5. Step 5: Solve for x
    x = 126,399,549.34/10,268.20
  6. Step 6: Final answer
    x = 12,309.81

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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.