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Finding the Fourth Proportional to 12,216.86, 18,326.88 and 3,452

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Solution

The fourth proportional to 12,216.86, 18,326.88 and 3,452 is: 5,178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.86 : 18,326.88 = 3,452 : x
  2. Step 2: Convert to fraction form
    12,216.86/18,326.88 = 3,452/x
  3. Step 3: Cross multiply
    12,216.86x = 18,326.88 × 3,452
  4. Step 4: Simplify right side
    12,216.86x = 63,264,389.76
  5. Step 5: Solve for x
    x = 63,264,389.76/12,216.86
  6. Step 6: Final answer
    x = 5,178.45

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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.