Home / 15,791.12-21,793.27-11,805.31

Finding the Fourth Proportional to 15,791.12, 21,793.27 and 11,805.31

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Solution

The fourth proportional to 15,791.12, 21,793.27 and 11,805.31 is: 16,292.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791.12 : 21,793.27 = 11,805.31 : x
  2. Step 2: Convert to fraction form
    15,791.12/21,793.27 = 11,805.31/x
  3. Step 3: Cross multiply
    15,791.12x = 21,793.27 × 11,805.31
  4. Step 4: Simplify right side
    15,791.12x = 257,276,199.30
  5. Step 5: Solve for x
    x = 257,276,199.30/15,791.12
  6. Step 6: Final answer
    x = 16,292.47

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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.