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Finding the Fourth Proportional to 21,952.27, 30,230.31 and 19,079.74

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Solution

The fourth proportional to 21,952.27, 30,230.31 and 19,079.74 is: 26,274.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952.27 : 30,230.31 = 19,079.74 : x
  2. Step 2: Convert to fraction form
    21,952.27/30,230.31 = 19,079.74/x
  3. Step 3: Cross multiply
    21,952.27x = 30,230.31 × 19,079.74
  4. Step 4: Simplify right side
    21,952.27x = 576,786,454.92
  5. Step 5: Solve for x
    x = 576,786,454.92/21,952.27
  6. Step 6: Final answer
    x = 26,274.57

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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.