Home / 10,986.20-15,161.04-6,270.78

Finding the Fourth Proportional to 10,986.20, 15,161.04 and 6,270.78

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Solution

The fourth proportional to 10,986.20, 15,161.04 and 6,270.78 is: 8,653.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.20 : 15,161.04 = 6,270.78 : x
  2. Step 2: Convert to fraction form
    10,986.20/15,161.04 = 6,270.78/x
  3. Step 3: Cross multiply
    10,986.20x = 15,161.04 × 6,270.78
  4. Step 4: Simplify right side
    10,986.20x = 95,071,546.41
  5. Step 5: Solve for x
    x = 95,071,546.41/10,986.20
  6. Step 6: Final answer
    x = 8,653.73

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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.