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Finding the Fourth Proportional to 11,712.15, 17,555.92 and 7,269.81

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Solution

The fourth proportional to 11,712.15, 17,555.92 and 7,269.81 is: 10,897.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.15 : 17,555.92 = 7,269.81 : x
  2. Step 2: Convert to fraction form
    11,712.15/17,555.92 = 7,269.81/x
  3. Step 3: Cross multiply
    11,712.15x = 17,555.92 × 7,269.81
  4. Step 4: Simplify right side
    11,712.15x = 127,628,202.78
  5. Step 5: Solve for x
    x = 127,628,202.78/11,712.15
  6. Step 6: Final answer
    x = 10,897.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.