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Finding the Fourth Proportional to 36,124.30, 54,195.90 and 13,938.40

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Solution

The fourth proportional to 36,124.30, 54,195.90 and 13,938.40 is: 20,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,124.30 : 54,195.90 = 13,938.40 : x
  2. Step 2: Convert to fraction form
    36,124.30/54,195.90 = 13,938.40/x
  3. Step 3: Cross multiply
    36,124.30x = 54,195.90 × 13,938.40
  4. Step 4: Simplify right side
    36,124.30x = 755,404,132.56
  5. Step 5: Solve for x
    x = 755,404,132.56/36,124.30
  6. Step 6: Final answer
    x = 20,911.25

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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.