Home / 13,619.20-18,793.88-7,650.76

Finding the Fourth Proportional to 13,619.20, 18,793.88 and 7,650.76

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Solution

The fourth proportional to 13,619.20, 18,793.88 and 7,650.76 is: 10,557.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.20 : 18,793.88 = 7,650.76 : x
  2. Step 2: Convert to fraction form
    13,619.20/18,793.88 = 7,650.76/x
  3. Step 3: Cross multiply
    13,619.20x = 18,793.88 × 7,650.76
  4. Step 4: Simplify right side
    13,619.20x = 143,787,465.35
  5. Step 5: Solve for x
    x = 143,787,465.35/13,619.20
  6. Step 6: Final answer
    x = 10,557.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.