Home / 13,441.39-18,543.94-8,660.98

Finding the Fourth Proportional to 13,441.39, 18,543.94 and 8,660.98

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Solution

The fourth proportional to 13,441.39, 18,543.94 and 8,660.98 is: 11,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,441.39 : 18,543.94 = 8,660.98 : x
  2. Step 2: Convert to fraction form
    13,441.39/18,543.94 = 8,660.98/x
  3. Step 3: Cross multiply
    13,441.39x = 18,543.94 × 8,660.98
  4. Step 4: Simplify right side
    13,441.39x = 160,608,590.68
  5. Step 5: Solve for x
    x = 160,608,590.68/13,441.39
  6. Step 6: Final answer
    x = 11,948.81

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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.