Home / 12,354.05-18,531.71-7,087.66

Finding the Fourth Proportional to 12,354.05, 18,531.71 and 7,087.66

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Solution

The fourth proportional to 12,354.05, 18,531.71 and 7,087.66 is: 10,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,354.05 : 18,531.71 = 7,087.66 : x
  2. Step 2: Convert to fraction form
    12,354.05/18,531.71 = 7,087.66/x
  3. Step 3: Cross multiply
    12,354.05x = 18,531.71 × 7,087.66
  4. Step 4: Simplify right side
    12,354.05x = 131,346,459.70
  5. Step 5: Solve for x
    x = 131,346,459.70/12,354.05
  6. Step 6: Final answer
    x = 10,631.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.