Home / 19,930.50-27,504.14-10,978.02

Finding the Fourth Proportional to 19,930.50, 27,504.14 and 10,978.02

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Solution

The fourth proportional to 19,930.50, 27,504.14 and 10,978.02 is: 15,149.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.50 : 27,504.14 = 10,978.02 : x
  2. Step 2: Convert to fraction form
    19,930.50/27,504.14 = 10,978.02/x
  3. Step 3: Cross multiply
    19,930.50x = 27,504.14 × 10,978.02
  4. Step 4: Simplify right side
    19,930.50x = 301,940,944.11
  5. Step 5: Solve for x
    x = 301,940,944.11/19,930.50
  6. Step 6: Final answer
    x = 15,149.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.