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Finding the Fourth Proportional to 22,653.12, 33,969.12 and 8,615.76

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Solution

The fourth proportional to 22,653.12, 33,969.12 and 8,615.76 is: 12,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,653.12 : 33,969.12 = 8,615.76 : x
  2. Step 2: Convert to fraction form
    22,653.12/33,969.12 = 8,615.76/x
  3. Step 3: Cross multiply
    22,653.12x = 33,969.12 × 8,615.76
  4. Step 4: Simplify right side
    22,653.12x = 292,669,785.33
  5. Step 5: Solve for x
    x = 292,669,785.33/22,653.12
  6. Step 6: Final answer
    x = 12,919.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.