Home / 19,930.38-27,503.25-10,977.87

Finding the Fourth Proportional to 19,930.38, 27,503.25 and 10,977.87

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Solution

The fourth proportional to 19,930.38, 27,503.25 and 10,977.87 is: 15,149.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.38 : 27,503.25 = 10,977.87 : x
  2. Step 2: Convert to fraction form
    19,930.38/27,503.25 = 10,977.87/x
  3. Step 3: Cross multiply
    19,930.38x = 27,503.25 × 10,977.87
  4. Step 4: Simplify right side
    19,930.38x = 301,927,103.08
  5. Step 5: Solve for x
    x = 301,927,103.08/19,930.38
  6. Step 6: Final answer
    x = 15,149.09

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1.5x scale

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.