Home / 12,195.10-18,293.64-3,430.72

Finding the Fourth Proportional to 12,195.10, 18,293.64 and 3,430.72

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Solution

The fourth proportional to 12,195.10, 18,293.64 and 3,430.72 is: 5,146.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.10 : 18,293.64 = 3,430.72 : x
  2. Step 2: Convert to fraction form
    12,195.10/18,293.64 = 3,430.72/x
  3. Step 3: Cross multiply
    12,195.10x = 18,293.64 × 3,430.72
  4. Step 4: Simplify right side
    12,195.10x = 62,760,356.62
  5. Step 5: Solve for x
    x = 62,760,356.62/12,195.10
  6. Step 6: Final answer
    x = 5,146.36

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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.