Home / 43,901.20-65,819.40-18,920.80

Finding the Fourth Proportional to 43,901.20, 65,819.40 and 18,920.80

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Solution

The fourth proportional to 43,901.20, 65,819.40 and 18,920.80 is: 28,367.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,901.20 : 65,819.40 = 18,920.80 : x
  2. Step 2: Convert to fraction form
    43,901.20/65,819.40 = 18,920.80/x
  3. Step 3: Cross multiply
    43,901.20x = 65,819.40 × 18,920.80
  4. Step 4: Simplify right side
    43,901.20x = 1,245,355,703.52
  5. Step 5: Solve for x
    x = 1,245,355,703.52/43,901.20
  6. Step 6: Final answer
    x = 28,367.24

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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.