Home / 21,185.06-29,235.09-11,753.66

Finding the Fourth Proportional to 21,185.06, 29,235.09 and 11,753.66

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Solution

The fourth proportional to 21,185.06, 29,235.09 and 11,753.66 is: 16,219.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.06 : 29,235.09 = 11,753.66 : x
  2. Step 2: Convert to fraction form
    21,185.06/29,235.09 = 11,753.66/x
  3. Step 3: Cross multiply
    21,185.06x = 29,235.09 × 11,753.66
  4. Step 4: Simplify right side
    21,185.06x = 343,619,307.93
  5. Step 5: Solve for x
    x = 343,619,307.93/21,185.06
  6. Step 6: Final answer
    x = 16,219.89

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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.