Home / 12,195.25-18,292.88-3,430.16

Finding the Fourth Proportional to 12,195.25, 18,292.88 and 3,430.16

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Solution

The fourth proportional to 12,195.25, 18,292.88 and 3,430.16 is: 5,145.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.25 : 18,292.88 = 3,430.16 : x
  2. Step 2: Convert to fraction form
    12,195.25/18,292.88 = 3,430.16/x
  3. Step 3: Cross multiply
    12,195.25x = 18,292.88 × 3,430.16
  4. Step 4: Simplify right side
    12,195.25x = 62,747,505.26
  5. Step 5: Solve for x
    x = 62,747,505.26/12,195.25
  6. Step 6: Final answer
    x = 5,145.24

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Double scale
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Similar ratio
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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.