Home / 21,189.12-29,242-11,757.76

Finding the Fourth Proportional to 21,189.12, 29,242 and 11,757.76

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Solution

The fourth proportional to 21,189.12, 29,242 and 11,757.76 is: 16,226.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.12 : 29,242 = 11,757.76 : x
  2. Step 2: Convert to fraction form
    21,189.12/29,242 = 11,757.76/x
  3. Step 3: Cross multiply
    21,189.12x = 29,242 × 11,757.76
  4. Step 4: Simplify right side
    21,189.12x = 343,820,417.92
  5. Step 5: Solve for x
    x = 343,820,417.92/21,189.12
  6. Step 6: Final answer
    x = 16,226.27

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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.