Home / 21,140.64-29,175.96-11,711.04

Finding the Fourth Proportional to 21,140.64, 29,175.96 and 11,711.04

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Solution

The fourth proportional to 21,140.64, 29,175.96 and 11,711.04 is: 16,162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.64 : 29,175.96 = 11,711.04 : x
  2. Step 2: Convert to fraction form
    21,140.64/29,175.96 = 11,711.04/x
  3. Step 3: Cross multiply
    21,140.64x = 29,175.96 × 11,711.04
  4. Step 4: Simplify right side
    21,140.64x = 341,680,834.60
  5. Step 5: Solve for x
    x = 341,680,834.60/21,140.64
  6. Step 6: Final answer
    x = 16,162.27

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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.