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Finding the Fourth Proportional to 38,232.40, 57,348.60 and 21,319.60

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Solution

The fourth proportional to 38,232.40, 57,348.60 and 21,319.60 is: 31,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,232.40 : 57,348.60 = 21,319.60 : x
  2. Step 2: Convert to fraction form
    38,232.40/57,348.60 = 21,319.60/x
  3. Step 3: Cross multiply
    38,232.40x = 57,348.60 × 21,319.60
  4. Step 4: Simplify right side
    38,232.40x = 1,222,649,212.56
  5. Step 5: Solve for x
    x = 1,222,649,212.56/38,232.40
  6. Step 6: Final answer
    x = 31,979.40

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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.