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Finding the Fourth Proportional to 12,488.51, 17,201.84 and 8,704.92

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Solution

The fourth proportional to 12,488.51, 17,201.84 and 8,704.92 is: 11,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.51 : 17,201.84 = 8,704.92 : x
  2. Step 2: Convert to fraction form
    12,488.51/17,201.84 = 8,704.92/x
  3. Step 3: Cross multiply
    12,488.51x = 17,201.84 × 8,704.92
  4. Step 4: Simplify right side
    12,488.51x = 149,740,597.53
  5. Step 5: Solve for x
    x = 149,740,597.53/12,488.51
  6. Step 6: Final answer
    x = 11,990.27

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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.