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Finding the Fourth Proportional to 38,405.50, 57,608.26 and 9,221.50

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Solution

The fourth proportional to 38,405.50, 57,608.26 and 9,221.50 is: 13,832.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,405.50 : 57,608.26 = 9,221.50 : x
  2. Step 2: Convert to fraction form
    38,405.50/57,608.26 = 9,221.50/x
  3. Step 3: Cross multiply
    38,405.50x = 57,608.26 × 9,221.50
  4. Step 4: Simplify right side
    38,405.50x = 531,234,569.59
  5. Step 5: Solve for x
    x = 531,234,569.59/38,405.50
  6. Step 6: Final answer
    x = 13,832.25

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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.