Home / 21,189.24-29,241.81-11,758.68

Finding the Fourth Proportional to 21,189.24, 29,241.81 and 11,758.68

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Solution

The fourth proportional to 21,189.24, 29,241.81 and 11,758.68 is: 16,227.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.24 : 29,241.81 = 11,758.68 : x
  2. Step 2: Convert to fraction form
    21,189.24/29,241.81 = 11,758.68/x
  3. Step 3: Cross multiply
    21,189.24x = 29,241.81 × 11,758.68
  4. Step 4: Simplify right side
    21,189.24x = 343,845,086.41
  5. Step 5: Solve for x
    x = 343,845,086.41/21,189.24
  6. Step 6: Final answer
    x = 16,227.34

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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.