Home / 10,239.12-15,351.84-3,999.69

Finding the Fourth Proportional to 10,239.12, 15,351.84 and 3,999.69

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Solution

The fourth proportional to 10,239.12, 15,351.84 and 3,999.69 is: 5,996.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,239.12 : 15,351.84 = 3,999.69 : x
  2. Step 2: Convert to fraction form
    10,239.12/15,351.84 = 3,999.69/x
  3. Step 3: Cross multiply
    10,239.12x = 15,351.84 × 3,999.69
  4. Step 4: Simplify right side
    10,239.12x = 61,402,600.93
  5. Step 5: Solve for x
    x = 61,402,600.93/10,239.12
  6. Step 6: Final answer
    x = 5,996.86

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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.