Home / 19,883.25-27,438.30-11,385.09

Finding the Fourth Proportional to 19,883.25, 27,438.30 and 11,385.09

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Solution

The fourth proportional to 19,883.25, 27,438.30 and 11,385.09 is: 15,711.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,883.25 : 27,438.30 = 11,385.09 : x
  2. Step 2: Convert to fraction form
    19,883.25/27,438.30 = 11,385.09/x
  3. Step 3: Cross multiply
    19,883.25x = 27,438.30 × 11,385.09
  4. Step 4: Simplify right side
    19,883.25x = 312,387,514.95
  5. Step 5: Solve for x
    x = 312,387,514.95/19,883.25
  6. Step 6: Final answer
    x = 15,711.09

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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.