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Finding the Fourth Proportional to 22,376.88, 30,886.32 and 12,822.12

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Solution

The fourth proportional to 22,376.88, 30,886.32 and 12,822.12 is: 17,698.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,376.88 : 30,886.32 = 12,822.12 : x
  2. Step 2: Convert to fraction form
    22,376.88/30,886.32 = 12,822.12/x
  3. Step 3: Cross multiply
    22,376.88x = 30,886.32 × 12,822.12
  4. Step 4: Simplify right side
    22,376.88x = 396,028,101.40
  5. Step 5: Solve for x
    x = 396,028,101.40/22,376.88
  6. Step 6: Final answer
    x = 17,698.09

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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.