Home / 19,930.57-27,503.17-10,977.88

Finding the Fourth Proportional to 19,930.57, 27,503.17 and 10,977.88

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Solution

The fourth proportional to 19,930.57, 27,503.17 and 10,977.88 is: 15,148.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.57 : 27,503.17 = 10,977.88 : x
  2. Step 2: Convert to fraction form
    19,930.57/27,503.17 = 10,977.88/x
  3. Step 3: Cross multiply
    19,930.57x = 27,503.17 × 10,977.88
  4. Step 4: Simplify right side
    19,930.57x = 301,926,307.47
  5. Step 5: Solve for x
    x = 301,926,307.47/19,930.57
  6. Step 6: Final answer
    x = 15,148.91

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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.