Home / 12,195.08-18,291.06-3,430.64

Finding the Fourth Proportional to 12,195.08, 18,291.06 and 3,430.64

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Solution

The fourth proportional to 12,195.08, 18,291.06 and 3,430.64 is: 5,145.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.08 : 18,291.06 = 3,430.64 : x
  2. Step 2: Convert to fraction form
    12,195.08/18,291.06 = 3,430.64/x
  3. Step 3: Cross multiply
    12,195.08x = 18,291.06 × 3,430.64
  4. Step 4: Simplify right side
    12,195.08x = 62,750,042.08
  5. Step 5: Solve for x
    x = 62,750,042.08/12,195.08
  6. Step 6: Final answer
    x = 5,145.52

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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.