Home / 27,990-41,985.33-11,977.37

Finding the Fourth Proportional to 27,990, 41,985.33 and 11,977.37

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Solution

The fourth proportional to 27,990, 41,985.33 and 11,977.37 is: 17,966.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,990 : 41,985.33 = 11,977.37 : x
  2. Step 2: Convert to fraction form
    27,990/41,985.33 = 11,977.37/x
  3. Step 3: Cross multiply
    27,990x = 41,985.33 × 11,977.37
  4. Step 4: Simplify right side
    27,990x = 502,873,734.59
  5. Step 5: Solve for x
    x = 502,873,734.59/27,990
  6. Step 6: Final answer
    x = 17,966.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.