Home / 19,982.16-29,962.36-6,129.36

Finding the Fourth Proportional to 19,982.16, 29,962.36 and 6,129.36

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Solution

The fourth proportional to 19,982.16, 29,962.36 and 6,129.36 is: 9,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.16 : 29,962.36 = 6,129.36 : x
  2. Step 2: Convert to fraction form
    19,982.16/29,962.36 = 6,129.36/x
  3. Step 3: Cross multiply
    19,982.16x = 29,962.36 × 6,129.36
  4. Step 4: Simplify right side
    19,982.16x = 183,650,090.89
  5. Step 5: Solve for x
    x = 183,650,090.89/19,982.16
  6. Step 6: Final answer
    x = 9,190.70

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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.