Home / 19,980.07-29,972.38-6,829.36

Finding the Fourth Proportional to 19,980.07, 29,972.38 and 6,829.36

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Solution

The fourth proportional to 19,980.07, 29,972.38 and 6,829.36 is: 10,244.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.07 : 29,972.38 = 6,829.36 : x
  2. Step 2: Convert to fraction form
    19,980.07/29,972.38 = 6,829.36/x
  3. Step 3: Cross multiply
    19,980.07x = 29,972.38 × 6,829.36
  4. Step 4: Simplify right side
    19,980.07x = 204,692,262.47
  5. Step 5: Solve for x
    x = 204,692,262.47/19,980.07
  6. Step 6: Final answer
    x = 10,244.82

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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.