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Finding the Fourth Proportional to 12,483.78, 18,717.12 and 4,162.95

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Solution

The fourth proportional to 12,483.78, 18,717.12 and 4,162.95 is: 6,241.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.78 : 18,717.12 = 4,162.95 : x
  2. Step 2: Convert to fraction form
    12,483.78/18,717.12 = 4,162.95/x
  3. Step 3: Cross multiply
    12,483.78x = 18,717.12 × 4,162.95
  4. Step 4: Simplify right side
    12,483.78x = 77,918,434.70
  5. Step 5: Solve for x
    x = 77,918,434.70/12,483.78
  6. Step 6: Final answer
    x = 6,241.57

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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.