Home / 10,201.91-15,288.48-8,112.65

Finding the Fourth Proportional to 10,201.91, 15,288.48 and 8,112.65

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Solution

The fourth proportional to 10,201.91, 15,288.48 and 8,112.65 is: 12,157.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,201.91 : 15,288.48 = 8,112.65 : x
  2. Step 2: Convert to fraction form
    10,201.91/15,288.48 = 8,112.65/x
  3. Step 3: Cross multiply
    10,201.91x = 15,288.48 × 8,112.65
  4. Step 4: Simplify right side
    10,201.91x = 124,030,010.83
  5. Step 5: Solve for x
    x = 124,030,010.83/10,201.91
  6. Step 6: Final answer
    x = 12,157.53

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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.