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Finding the Fourth Proportional to 38,238.60, 57,393.60 and 19,531.56

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Solution

The fourth proportional to 38,238.60, 57,393.60 and 19,531.56 is: 29,315.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,238.60 : 57,393.60 = 19,531.56 : x
  2. Step 2: Convert to fraction form
    38,238.60/57,393.60 = 19,531.56/x
  3. Step 3: Cross multiply
    38,238.60x = 57,393.60 × 19,531.56
  4. Step 4: Simplify right side
    38,238.60x = 1,120,986,542.02
  5. Step 5: Solve for x
    x = 1,120,986,542.02/38,238.60
  6. Step 6: Final answer
    x = 29,315.57

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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.