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Finding the Fourth Proportional to 11,199.12, 15,454.56 and 7,009.68

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Solution

The fourth proportional to 11,199.12, 15,454.56 and 7,009.68 is: 9,673.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,199.12 : 15,454.56 = 7,009.68 : x
  2. Step 2: Convert to fraction form
    11,199.12/15,454.56 = 7,009.68/x
  3. Step 3: Cross multiply
    11,199.12x = 15,454.56 × 7,009.68
  4. Step 4: Simplify right side
    11,199.12x = 108,331,520.14
  5. Step 5: Solve for x
    x = 108,331,520.14/11,199.12
  6. Step 6: Final answer
    x = 9,673.22

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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.