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Finding the Fourth Proportional to 12,366.84, 18,537.96 and 7,987.44

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Solution

The fourth proportional to 12,366.84, 18,537.96 and 7,987.44 is: 11,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,366.84 : 18,537.96 = 7,987.44 : x
  2. Step 2: Convert to fraction form
    12,366.84/18,537.96 = 7,987.44/x
  3. Step 3: Cross multiply
    12,366.84x = 18,537.96 × 7,987.44
  4. Step 4: Simplify right side
    12,366.84x = 148,070,843.22
  5. Step 5: Solve for x
    x = 148,070,843.22/12,366.84
  6. Step 6: Final answer
    x = 11,973.22

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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.