Home / 19,930.40-27,504.02-10,977.88

Finding the Fourth Proportional to 19,930.40, 27,504.02 and 10,977.88

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Solution

The fourth proportional to 19,930.40, 27,504.02 and 10,977.88 is: 15,149.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.40 : 27,504.02 = 10,977.88 : x
  2. Step 2: Convert to fraction form
    19,930.40/27,504.02 = 10,977.88/x
  3. Step 3: Cross multiply
    19,930.40x = 27,504.02 × 10,977.88
  4. Step 4: Simplify right side
    19,930.40x = 301,935,841.33
  5. Step 5: Solve for x
    x = 301,935,841.33/19,930.40
  6. Step 6: Final answer
    x = 15,149.52

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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.