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Finding the Fourth Proportional to 20,594.32, 30,885.30 and 8,747.87

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Solution

The fourth proportional to 20,594.32, 30,885.30 and 8,747.87 is: 13,119.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,594.32 : 30,885.30 = 8,747.87 : x
  2. Step 2: Convert to fraction form
    20,594.32/30,885.30 = 8,747.87/x
  3. Step 3: Cross multiply
    20,594.32x = 30,885.30 × 8,747.87
  4. Step 4: Simplify right side
    20,594.32x = 270,180,434.88
  5. Step 5: Solve for x
    x = 270,180,434.88/20,594.32
  6. Step 6: Final answer
    x = 13,119.17

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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.