Home / 13,115.05-18,097.89-7,737.21

Finding the Fourth Proportional to 13,115.05, 18,097.89 and 7,737.21

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Solution

The fourth proportional to 13,115.05, 18,097.89 and 7,737.21 is: 10,676.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.05 : 18,097.89 = 7,737.21 : x
  2. Step 2: Convert to fraction form
    13,115.05/18,097.89 = 7,737.21/x
  3. Step 3: Cross multiply
    13,115.05x = 18,097.89 × 7,737.21
  4. Step 4: Simplify right side
    13,115.05x = 140,027,175.49
  5. Step 5: Solve for x
    x = 140,027,175.49/13,115.05
  6. Step 6: Final answer
    x = 10,676.83

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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.