Home / 21,189.36-29,241.51-11,758.53

Finding the Fourth Proportional to 21,189.36, 29,241.51 and 11,758.53

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Solution

The fourth proportional to 21,189.36, 29,241.51 and 11,758.53 is: 16,226.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.36 : 29,241.51 = 11,758.53 : x
  2. Step 2: Convert to fraction form
    21,189.36/29,241.51 = 11,758.53/x
  3. Step 3: Cross multiply
    21,189.36x = 29,241.51 × 11,758.53
  4. Step 4: Simplify right side
    21,189.36x = 343,837,172.58
  5. Step 5: Solve for x
    x = 343,837,172.58/21,189.36
  6. Step 6: Final answer
    x = 16,226.88

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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.