Home / 13,207.50-18,234.78-11,788.72

Finding the Fourth Proportional to 13,207.50, 18,234.78 and 11,788.72

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Solution

The fourth proportional to 13,207.50, 18,234.78 and 11,788.72 is: 16,275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.50 : 18,234.78 = 11,788.72 : x
  2. Step 2: Convert to fraction form
    13,207.50/18,234.78 = 11,788.72/x
  3. Step 3: Cross multiply
    13,207.50x = 18,234.78 × 11,788.72
  4. Step 4: Simplify right side
    13,207.50x = 214,964,715.68
  5. Step 5: Solve for x
    x = 214,964,715.68/13,207.50
  6. Step 6: Final answer
    x = 16,275.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.