Home / 20,322.48-30,484.91-7,842.57

Finding the Fourth Proportional to 20,322.48, 30,484.91 and 7,842.57

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Solution

The fourth proportional to 20,322.48, 30,484.91 and 7,842.57 is: 11,764.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.48 : 30,484.91 = 7,842.57 : x
  2. Step 2: Convert to fraction form
    20,322.48/30,484.91 = 7,842.57/x
  3. Step 3: Cross multiply
    20,322.48x = 30,484.91 × 7,842.57
  4. Step 4: Simplify right side
    20,322.48x = 239,080,040.62
  5. Step 5: Solve for x
    x = 239,080,040.62/20,322.48
  6. Step 6: Final answer
    x = 11,764.31

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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.