Home / 18,709.38-28,064.10-12,481.56

Finding the Fourth Proportional to 18,709.38, 28,064.10 and 12,481.56

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Solution

The fourth proportional to 18,709.38, 28,064.10 and 12,481.56 is: 18,722.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.38 : 28,064.10 = 12,481.56 : x
  2. Step 2: Convert to fraction form
    18,709.38/28,064.10 = 12,481.56/x
  3. Step 3: Cross multiply
    18,709.38x = 28,064.10 × 12,481.56
  4. Step 4: Simplify right side
    18,709.38x = 350,283,748.00
  5. Step 5: Solve for x
    x = 350,283,748.00/18,709.38
  6. Step 6: Final answer
    x = 18,722.36

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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.