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Finding the Fourth Proportional to 11,199.92, 15,449.48 and 7,000.88

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Solution

The fourth proportional to 11,199.92, 15,449.48 and 7,000.88 is: 9,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,199.92 : 15,449.48 = 7,000.88 : x
  2. Step 2: Convert to fraction form
    11,199.92/15,449.48 = 7,000.88/x
  3. Step 3: Cross multiply
    11,199.92x = 15,449.48 × 7,000.88
  4. Step 4: Simplify right side
    11,199.92x = 108,159,995.83
  5. Step 5: Solve for x
    x = 108,159,995.83/11,199.92
  6. Step 6: Final answer
    x = 9,657.21

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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.