Home / 38,400.30-57,600.45-12,107.70

Finding the Fourth Proportional to 38,400.30, 57,600.45 and 12,107.70

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Solution

The fourth proportional to 38,400.30, 57,600.45 and 12,107.70 is: 18,161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,400.30 : 57,600.45 = 12,107.70 : x
  2. Step 2: Convert to fraction form
    38,400.30/57,600.45 = 12,107.70/x
  3. Step 3: Cross multiply
    38,400.30x = 57,600.45 × 12,107.70
  4. Step 4: Simplify right side
    38,400.30x = 697,408,968.47
  5. Step 5: Solve for x
    x = 697,408,968.47/38,400.30
  6. Step 6: Final answer
    x = 18,161.55

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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.