Home / 19,982.16-29,999.16-13,087.44

Finding the Fourth Proportional to 19,982.16, 29,999.16 and 13,087.44

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Solution

The fourth proportional to 19,982.16, 29,999.16 and 13,087.44 is: 19,648.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.16 : 29,999.16 = 13,087.44 : x
  2. Step 2: Convert to fraction form
    19,982.16/29,999.16 = 13,087.44/x
  3. Step 3: Cross multiply
    19,982.16x = 29,999.16 × 13,087.44
  4. Step 4: Simplify right side
    19,982.16x = 392,612,206.55
  5. Step 5: Solve for x
    x = 392,612,206.55/19,982.16
  6. Step 6: Final answer
    x = 19,648.14

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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.