Home / 10,231.16-15,336.40-3,987.28

Finding the Fourth Proportional to 10,231.16, 15,336.40 and 3,987.28

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Solution

The fourth proportional to 10,231.16, 15,336.40 and 3,987.28 is: 5,976.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,231.16 : 15,336.40 = 3,987.28 : x
  2. Step 2: Convert to fraction form
    10,231.16/15,336.40 = 3,987.28/x
  3. Step 3: Cross multiply
    10,231.16x = 15,336.40 × 3,987.28
  4. Step 4: Simplify right side
    10,231.16x = 61,150,520.99
  5. Step 5: Solve for x
    x = 61,150,520.99/10,231.16
  6. Step 6: Final answer
    x = 5,976.89

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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.