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Finding the Fourth Proportional to 47,483.82, 71,220.87 and 12,418.92

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Solution

The fourth proportional to 47,483.82, 71,220.87 and 12,418.92 is: 18,627.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,483.82 : 71,220.87 = 12,418.92 : x
  2. Step 2: Convert to fraction form
    47,483.82/71,220.87 = 12,418.92/x
  3. Step 3: Cross multiply
    47,483.82x = 71,220.87 × 12,418.92
  4. Step 4: Simplify right side
    47,483.82x = 884,486,286.86
  5. Step 5: Solve for x
    x = 884,486,286.86/47,483.82
  6. Step 6: Final answer
    x = 18,627.11

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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.