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Finding the Fourth Proportional to 22,253.35, 30,712.35 and 13,300.78

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Solution

The fourth proportional to 22,253.35, 30,712.35 and 13,300.78 is: 18,356.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,253.35 : 30,712.35 = 13,300.78 : x
  2. Step 2: Convert to fraction form
    22,253.35/30,712.35 = 13,300.78/x
  3. Step 3: Cross multiply
    22,253.35x = 30,712.35 × 13,300.78
  4. Step 4: Simplify right side
    22,253.35x = 408,498,210.63
  5. Step 5: Solve for x
    x = 408,498,210.63/22,253.35
  6. Step 6: Final answer
    x = 18,356.71

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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.