Home / 12,189.29-18,284.65-3,424.89

Finding the Fourth Proportional to 12,189.29, 18,284.65 and 3,424.89

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Solution

The fourth proportional to 12,189.29, 18,284.65 and 3,424.89 is: 5,137.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.29 : 18,284.65 = 3,424.89 : x
  2. Step 2: Convert to fraction form
    12,189.29/18,284.65 = 3,424.89/x
  3. Step 3: Cross multiply
    12,189.29x = 18,284.65 × 3,424.89
  4. Step 4: Simplify right side
    12,189.29x = 62,622,906.38
  5. Step 5: Solve for x
    x = 62,622,906.38/12,189.29
  6. Step 6: Final answer
    x = 5,137.53

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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.