Home / 12,209.73-18,312.97-3,445.35

Finding the Fourth Proportional to 12,209.73, 18,312.97 and 3,445.35

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Solution

The fourth proportional to 12,209.73, 18,312.97 and 3,445.35 is: 5,167.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.73 : 18,312.97 = 3,445.35 : x
  2. Step 2: Convert to fraction form
    12,209.73/18,312.97 = 3,445.35/x
  3. Step 3: Cross multiply
    12,209.73x = 18,312.97 × 3,445.35
  4. Step 4: Simplify right side
    12,209.73x = 63,094,591.19
  5. Step 5: Solve for x
    x = 63,094,591.19/12,209.73
  6. Step 6: Final answer
    x = 5,167.57

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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.