Home / 21,274.62-29,350.45-12,777.21

Finding the Fourth Proportional to 21,274.62, 29,350.45 and 12,777.21

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Solution

The fourth proportional to 21,274.62, 29,350.45 and 12,777.21 is: 17,627.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.62 : 29,350.45 = 12,777.21 : x
  2. Step 2: Convert to fraction form
    21,274.62/29,350.45 = 12,777.21/x
  3. Step 3: Cross multiply
    21,274.62x = 29,350.45 × 12,777.21
  4. Step 4: Simplify right side
    21,274.62x = 375,016,879.22
  5. Step 5: Solve for x
    x = 375,016,879.22/21,274.62
  6. Step 6: Final answer
    x = 17,627.43

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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.