Home / 21,187.14-29,238.27-11,755.71

Finding the Fourth Proportional to 21,187.14, 29,238.27 and 11,755.71

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Solution

The fourth proportional to 21,187.14, 29,238.27 and 11,755.71 is: 16,222.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.14 : 29,238.27 = 11,755.71 : x
  2. Step 2: Convert to fraction form
    21,187.14/29,238.27 = 11,755.71/x
  3. Step 3: Cross multiply
    21,187.14x = 29,238.27 × 11,755.71
  4. Step 4: Simplify right side
    21,187.14x = 343,716,623.02
  5. Step 5: Solve for x
    x = 343,716,623.02/21,187.14
  6. Step 6: Final answer
    x = 16,222.89

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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.