Home / 21,186.29-29,239.58-11,755.46

Finding the Fourth Proportional to 21,186.29, 29,239.58 and 11,755.46

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Solution

The fourth proportional to 21,186.29, 29,239.58 and 11,755.46 is: 16,223.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.29 : 29,239.58 = 11,755.46 : x
  2. Step 2: Convert to fraction form
    21,186.29/29,239.58 = 11,755.46/x
  3. Step 3: Cross multiply
    21,186.29x = 29,239.58 × 11,755.46
  4. Step 4: Simplify right side
    21,186.29x = 343,724,713.11
  5. Step 5: Solve for x
    x = 343,724,713.11/21,186.29
  6. Step 6: Final answer
    x = 16,223.92

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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.