Home / 21,245.82-29,319.94-11,686.11

Finding the Fourth Proportional to 21,245.82, 29,319.94 and 11,686.11

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Solution

The fourth proportional to 21,245.82, 29,319.94 and 11,686.11 is: 16,127.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.82 : 29,319.94 = 11,686.11 : x
  2. Step 2: Convert to fraction form
    21,245.82/29,319.94 = 11,686.11/x
  3. Step 3: Cross multiply
    21,245.82x = 29,319.94 × 11,686.11
  4. Step 4: Simplify right side
    21,245.82x = 342,635,839.00
  5. Step 5: Solve for x
    x = 342,635,839.00/21,245.82
  6. Step 6: Final answer
    x = 16,127.22

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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.