Home / 12,195.72-18,294.66-3,430.71

Finding the Fourth Proportional to 12,195.72, 18,294.66 and 3,430.71

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Solution

The fourth proportional to 12,195.72, 18,294.66 and 3,430.71 is: 5,146.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.72 : 18,294.66 = 3,430.71 : x
  2. Step 2: Convert to fraction form
    12,195.72/18,294.66 = 3,430.71/x
  3. Step 3: Cross multiply
    12,195.72x = 18,294.66 × 3,430.71
  4. Step 4: Simplify right side
    12,195.72x = 62,763,673.01
  5. Step 5: Solve for x
    x = 62,763,673.01/12,195.72
  6. Step 6: Final answer
    x = 5,146.37

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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.