Home / 12,195.09-18,293.72-3,430.08

Finding the Fourth Proportional to 12,195.09, 18,293.72 and 3,430.08

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Solution

The fourth proportional to 12,195.09, 18,293.72 and 3,430.08 is: 5,145.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.09 : 18,293.72 = 3,430.08 : x
  2. Step 2: Convert to fraction form
    12,195.09/18,293.72 = 3,430.08/x
  3. Step 3: Cross multiply
    12,195.09x = 18,293.72 × 3,430.08
  4. Step 4: Simplify right side
    12,195.09x = 62,748,905.95
  5. Step 5: Solve for x
    x = 62,748,905.95/12,195.09
  6. Step 6: Final answer
    x = 5,145.42

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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.