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Finding the Fourth Proportional to 12,480.84, 17,230.59 and 8,658

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Solution

The fourth proportional to 12,480.84, 17,230.59 and 8,658 is: 11,952.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.84 : 17,230.59 = 8,658 : x
  2. Step 2: Convert to fraction form
    12,480.84/17,230.59 = 8,658/x
  3. Step 3: Cross multiply
    12,480.84x = 17,230.59 × 8,658
  4. Step 4: Simplify right side
    12,480.84x = 149,182,448.22
  5. Step 5: Solve for x
    x = 149,182,448.22/12,480.84
  6. Step 6: Final answer
    x = 11,952.92

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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.