Home / 21,536.66-29,720.46-12,105.24

Finding the Fourth Proportional to 21,536.66, 29,720.46 and 12,105.24

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Solution

The fourth proportional to 21,536.66, 29,720.46 and 12,105.24 is: 16,705.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,536.66 : 29,720.46 = 12,105.24 : x
  2. Step 2: Convert to fraction form
    21,536.66/29,720.46 = 12,105.24/x
  3. Step 3: Cross multiply
    21,536.66x = 29,720.46 × 12,105.24
  4. Step 4: Simplify right side
    21,536.66x = 359,773,301.21
  5. Step 5: Solve for x
    x = 359,773,301.21/21,536.66
  6. Step 6: Final answer
    x = 16,705.16

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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.