Home / 11,218.20-15,462.90-8,972.88

Finding the Fourth Proportional to 11,218.20, 15,462.90 and 8,972.88

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Solution

The fourth proportional to 11,218.20, 15,462.90 and 8,972.88 is: 12,368.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,218.20 : 15,462.90 = 8,972.88 : x
  2. Step 2: Convert to fraction form
    11,218.20/15,462.90 = 8,972.88/x
  3. Step 3: Cross multiply
    11,218.20x = 15,462.90 × 8,972.88
  4. Step 4: Simplify right side
    11,218.20x = 138,746,746.15
  5. Step 5: Solve for x
    x = 138,746,746.15/11,218.20
  6. Step 6: Final answer
    x = 12,368.00

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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.