Home / 19,821.50-29,732.69-7,976.46

Finding the Fourth Proportional to 19,821.50, 29,732.69 and 7,976.46

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Solution

The fourth proportional to 19,821.50, 29,732.69 and 7,976.46 is: 11,964.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.50 : 29,732.69 = 7,976.46 : x
  2. Step 2: Convert to fraction form
    19,821.50/29,732.69 = 7,976.46/x
  3. Step 3: Cross multiply
    19,821.50x = 29,732.69 × 7,976.46
  4. Step 4: Simplify right side
    19,821.50x = 237,161,612.48
  5. Step 5: Solve for x
    x = 237,161,612.48/19,821.50
  6. Step 6: Final answer
    x = 11,964.87

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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.