Home / 21,135.66-29,168.12-11,704.22

Finding the Fourth Proportional to 21,135.66, 29,168.12 and 11,704.22

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Solution

The fourth proportional to 21,135.66, 29,168.12 and 11,704.22 is: 16,152.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.66 : 29,168.12 = 11,704.22 : x
  2. Step 2: Convert to fraction form
    21,135.66/29,168.12 = 11,704.22/x
  3. Step 3: Cross multiply
    21,135.66x = 29,168.12 × 11,704.22
  4. Step 4: Simplify right side
    21,135.66x = 341,390,086.27
  5. Step 5: Solve for x
    x = 341,390,086.27/21,135.66
  6. Step 6: Final answer
    x = 16,152.33

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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.