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Finding the Fourth Proportional to 12,638.33, 18,920.04 and 9,366.11

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Solution

The fourth proportional to 12,638.33, 18,920.04 and 9,366.11 is: 14,021.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.33 : 18,920.04 = 9,366.11 : x
  2. Step 2: Convert to fraction form
    12,638.33/18,920.04 = 9,366.11/x
  3. Step 3: Cross multiply
    12,638.33x = 18,920.04 × 9,366.11
  4. Step 4: Simplify right side
    12,638.33x = 177,207,081.24
  5. Step 5: Solve for x
    x = 177,207,081.24/12,638.33
  6. Step 6: Final answer
    x = 14,021.41

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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.