Home / 12,353.25-18,531.80-4,147.17

Finding the Fourth Proportional to 12,353.25, 18,531.80 and 4,147.17

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Solution

The fourth proportional to 12,353.25, 18,531.80 and 4,147.17 is: 6,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,353.25 : 18,531.80 = 4,147.17 : x
  2. Step 2: Convert to fraction form
    12,353.25/18,531.80 = 4,147.17/x
  3. Step 3: Cross multiply
    12,353.25x = 18,531.80 × 4,147.17
  4. Step 4: Simplify right side
    12,353.25x = 76,854,504.27
  5. Step 5: Solve for x
    x = 76,854,504.27/12,353.25
  6. Step 6: Final answer
    x = 6,221.40

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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.