Home / 19,930.36-27,504.09-10,977.90

Finding the Fourth Proportional to 19,930.36, 27,504.09 and 10,977.90

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Solution

The fourth proportional to 19,930.36, 27,504.09 and 10,977.90 is: 15,149.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.36 : 27,504.09 = 10,977.90 : x
  2. Step 2: Convert to fraction form
    19,930.36/27,504.09 = 10,977.90/x
  3. Step 3: Cross multiply
    19,930.36x = 27,504.09 × 10,977.90
  4. Step 4: Simplify right side
    19,930.36x = 301,937,149.61
  5. Step 5: Solve for x
    x = 301,937,149.61/19,930.36
  6. Step 6: Final answer
    x = 15,149.61

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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.