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Finding the Fourth Proportional to 22,351.28, 30,841.08 and 12,919.28

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Solution

The fourth proportional to 22,351.28, 30,841.08 and 12,919.28 is: 17,826.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,351.28 : 30,841.08 = 12,919.28 : x
  2. Step 2: Convert to fraction form
    22,351.28/30,841.08 = 12,919.28/x
  3. Step 3: Cross multiply
    22,351.28x = 30,841.08 × 12,919.28
  4. Step 4: Simplify right side
    22,351.28x = 398,444,548.02
  5. Step 5: Solve for x
    x = 398,444,548.02/22,351.28
  6. Step 6: Final answer
    x = 17,826.48

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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.