Home / 21,282.42-29,367.72-11,722.20

Finding the Fourth Proportional to 21,282.42, 29,367.72 and 11,722.20

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Solution

The fourth proportional to 21,282.42, 29,367.72 and 11,722.20 is: 16,175.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.42 : 29,367.72 = 11,722.20 : x
  2. Step 2: Convert to fraction form
    21,282.42/29,367.72 = 11,722.20/x
  3. Step 3: Cross multiply
    21,282.42x = 29,367.72 × 11,722.20
  4. Step 4: Simplify right side
    21,282.42x = 344,254,287.38
  5. Step 5: Solve for x
    x = 344,254,287.38/21,282.42
  6. Step 6: Final answer
    x = 16,175.52

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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.