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Finding the Fourth Proportional to 19,258.28, 28,877.58 and 8,861

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Solution

The fourth proportional to 19,258.28, 28,877.58 and 8,861 is: 13,286.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,258.28 : 28,877.58 = 8,861 : x
  2. Step 2: Convert to fraction form
    19,258.28/28,877.58 = 8,861/x
  3. Step 3: Cross multiply
    19,258.28x = 28,877.58 × 8,861
  4. Step 4: Simplify right side
    19,258.28x = 255,884,236.38
  5. Step 5: Solve for x
    x = 255,884,236.38/19,258.28
  6. Step 6: Final answer
    x = 13,286.97

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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.