Home / 11,217.20-15,461.52-8,971.88

Finding the Fourth Proportional to 11,217.20, 15,461.52 and 8,971.88

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Solution

The fourth proportional to 11,217.20, 15,461.52 and 8,971.88 is: 12,366.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,217.20 : 15,461.52 = 8,971.88 : x
  2. Step 2: Convert to fraction form
    11,217.20/15,461.52 = 8,971.88/x
  3. Step 3: Cross multiply
    11,217.20x = 15,461.52 × 8,971.88
  4. Step 4: Simplify right side
    11,217.20x = 138,718,902.06
  5. Step 5: Solve for x
    x = 138,718,902.06/11,217.20
  6. Step 6: Final answer
    x = 12,366.62

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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.