Home / 38,954.20-58,445.70-12,659.80

Finding the Fourth Proportional to 38,954.20, 58,445.70 and 12,659.80

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Solution

The fourth proportional to 38,954.20, 58,445.70 and 12,659.80 is: 18,994.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,954.20 : 58,445.70 = 12,659.80 : x
  2. Step 2: Convert to fraction form
    38,954.20/58,445.70 = 12,659.80/x
  3. Step 3: Cross multiply
    38,954.20x = 58,445.70 × 12,659.80
  4. Step 4: Simplify right side
    38,954.20x = 739,910,872.86
  5. Step 5: Solve for x
    x = 739,910,872.86/38,954.20
  6. Step 6: Final answer
    x = 18,994.38

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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.