Home / 19,982.28-29,972.34-6,131.28

Finding the Fourth Proportional to 19,982.28, 29,972.34 and 6,131.28

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Solution

The fourth proportional to 19,982.28, 29,972.34 and 6,131.28 is: 9,196.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.28 : 29,972.34 = 6,131.28 : x
  2. Step 2: Convert to fraction form
    19,982.28/29,972.34 = 6,131.28/x
  3. Step 3: Cross multiply
    19,982.28x = 29,972.34 × 6,131.28
  4. Step 4: Simplify right side
    19,982.28x = 183,768,808.80
  5. Step 5: Solve for x
    x = 183,768,808.80/19,982.28
  6. Step 6: Final answer
    x = 9,196.59

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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.