Home / 21,923.34-30,256.79-21,234.44

Finding the Fourth Proportional to 21,923.34, 30,256.79 and 21,234.44

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Solution

The fourth proportional to 21,923.34, 30,256.79 and 21,234.44 is: 29,306.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.34 : 30,256.79 = 21,234.44 : x
  2. Step 2: Convert to fraction form
    21,923.34/30,256.79 = 21,234.44/x
  3. Step 3: Cross multiply
    21,923.34x = 30,256.79 × 21,234.44
  4. Step 4: Simplify right side
    21,923.34x = 642,485,734.39
  5. Step 5: Solve for x
    x = 642,485,734.39/21,923.34
  6. Step 6: Final answer
    x = 29,306.02

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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.