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Finding the Fourth Proportional to 38,999.80, 58,498.80 and 12,704.35

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Solution

The fourth proportional to 38,999.80, 58,498.80 and 12,704.35 is: 19,056.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,999.80 : 58,498.80 = 12,704.35 : x
  2. Step 2: Convert to fraction form
    38,999.80/58,498.80 = 12,704.35/x
  3. Step 3: Cross multiply
    38,999.80x = 58,498.80 × 12,704.35
  4. Step 4: Simplify right side
    38,999.80x = 743,189,229.78
  5. Step 5: Solve for x
    x = 743,189,229.78/38,999.80
  6. Step 6: Final answer
    x = 19,056.23

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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.