Home / 13,626.20-18,803.13-7,656.73

Finding the Fourth Proportional to 13,626.20, 18,803.13 and 7,656.73

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Solution

The fourth proportional to 13,626.20, 18,803.13 and 7,656.73 is: 10,565.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.20 : 18,803.13 = 7,656.73 : x
  2. Step 2: Convert to fraction form
    13,626.20/18,803.13 = 7,656.73/x
  3. Step 3: Cross multiply
    13,626.20x = 18,803.13 × 7,656.73
  4. Step 4: Simplify right side
    13,626.20x = 143,970,489.56
  5. Step 5: Solve for x
    x = 143,970,489.56/13,626.20
  6. Step 6: Final answer
    x = 10,565.71

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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.