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Finding the Fourth Proportional to 12,482.52, 18,719.01 and 4,160.94

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Solution

The fourth proportional to 12,482.52, 18,719.01 and 4,160.94 is: 6,239.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.52 : 18,719.01 = 4,160.94 : x
  2. Step 2: Convert to fraction form
    12,482.52/18,719.01 = 4,160.94/x
  3. Step 3: Cross multiply
    12,482.52x = 18,719.01 × 4,160.94
  4. Step 4: Simplify right side
    12,482.52x = 77,888,677.47
  5. Step 5: Solve for x
    x = 77,888,677.47/12,482.52
  6. Step 6: Final answer
    x = 6,239.82

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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.