Home / 21,171.72-29,218.14-11,740.08

Finding the Fourth Proportional to 21,171.72, 29,218.14 and 11,740.08

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Solution

The fourth proportional to 21,171.72, 29,218.14 and 11,740.08 is: 16,201.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.72 : 29,218.14 = 11,740.08 : x
  2. Step 2: Convert to fraction form
    21,171.72/29,218.14 = 11,740.08/x
  3. Step 3: Cross multiply
    21,171.72x = 29,218.14 × 11,740.08
  4. Step 4: Simplify right side
    21,171.72x = 343,023,301.05
  5. Step 5: Solve for x
    x = 343,023,301.05/21,171.72
  6. Step 6: Final answer
    x = 16,201.96

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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.