Home / 21,640.72-32,456.76-6,847.12

Finding the Fourth Proportional to 21,640.72, 32,456.76 and 6,847.12

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Solution

The fourth proportional to 21,640.72, 32,456.76 and 6,847.12 is: 10,269.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,640.72 : 32,456.76 = 6,847.12 : x
  2. Step 2: Convert to fraction form
    21,640.72/32,456.76 = 6,847.12/x
  3. Step 3: Cross multiply
    21,640.72x = 32,456.76 × 6,847.12
  4. Step 4: Simplify right side
    21,640.72x = 222,235,330.53
  5. Step 5: Solve for x
    x = 222,235,330.53/21,640.72
  6. Step 6: Final answer
    x = 10,269.31

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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.