Home / 12,295.50-18,445.05-3,972.75

Finding the Fourth Proportional to 12,295.50, 18,445.05 and 3,972.75

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Solution

The fourth proportional to 12,295.50, 18,445.05 and 3,972.75 is: 5,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,295.50 : 18,445.05 = 3,972.75 : x
  2. Step 2: Convert to fraction form
    12,295.50/18,445.05 = 3,972.75/x
  3. Step 3: Cross multiply
    12,295.50x = 18,445.05 × 3,972.75
  4. Step 4: Simplify right side
    12,295.50x = 73,277,572.39
  5. Step 5: Solve for x
    x = 73,277,572.39/12,295.50
  6. Step 6: Final answer
    x = 5,959.71

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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.