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Finding the Fourth Proportional to 38,295.40, 57,378.30 and 18,531.40

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Solution

The fourth proportional to 38,295.40, 57,378.30 and 18,531.40 is: 27,765.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,295.40 : 57,378.30 = 18,531.40 : x
  2. Step 2: Convert to fraction form
    38,295.40/57,378.30 = 18,531.40/x
  3. Step 3: Cross multiply
    38,295.40x = 57,378.30 × 18,531.40
  4. Step 4: Simplify right side
    38,295.40x = 1,063,300,228.62
  5. Step 5: Solve for x
    x = 1,063,300,228.62/38,295.40
  6. Step 6: Final answer
    x = 27,765.74

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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.