Home / 13,591.07-18,755.85-8,212.74

Finding the Fourth Proportional to 13,591.07, 18,755.85 and 8,212.74

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Solution

The fourth proportional to 13,591.07, 18,755.85 and 8,212.74 is: 11,333.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.07 : 18,755.85 = 8,212.74 : x
  2. Step 2: Convert to fraction form
    13,591.07/18,755.85 = 8,212.74/x
  3. Step 3: Cross multiply
    13,591.07x = 18,755.85 × 8,212.74
  4. Step 4: Simplify right side
    13,591.07x = 154,036,919.53
  5. Step 5: Solve for x
    x = 154,036,919.53/13,591.07
  6. Step 6: Final answer
    x = 11,333.69

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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.