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Finding the Fourth Proportional to 22,358.88, 30,849.84 and 12,422.88

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Solution

The fourth proportional to 22,358.88, 30,849.84 and 12,422.88 is: 17,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,358.88 : 30,849.84 = 12,422.88 : x
  2. Step 2: Convert to fraction form
    22,358.88/30,849.84 = 12,422.88/x
  3. Step 3: Cross multiply
    22,358.88x = 30,849.84 × 12,422.88
  4. Step 4: Simplify right side
    22,358.88x = 383,243,860.34
  5. Step 5: Solve for x
    x = 383,243,860.34/22,358.88
  6. Step 6: Final answer
    x = 17,140.57

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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.