Home / 19,839.90-29,781.72-9,976.53

Finding the Fourth Proportional to 19,839.90, 29,781.72 and 9,976.53

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Solution

The fourth proportional to 19,839.90, 29,781.72 and 9,976.53 is: 14,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,839.90 : 29,781.72 = 9,976.53 : x
  2. Step 2: Convert to fraction form
    19,839.90/29,781.72 = 9,976.53/x
  3. Step 3: Cross multiply
    19,839.90x = 29,781.72 × 9,976.53
  4. Step 4: Simplify right side
    19,839.90x = 297,118,223.03
  5. Step 5: Solve for x
    x = 297,118,223.03/19,839.90
  6. Step 6: Final answer
    x = 14,975.79

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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.