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Finding the Fourth Proportional to 20,468.54, 30,702.81 and 8,624.18

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Solution

The fourth proportional to 20,468.54, 30,702.81 and 8,624.18 is: 12,936.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.54 : 30,702.81 = 8,624.18 : x
  2. Step 2: Convert to fraction form
    20,468.54/30,702.81 = 8,624.18/x
  3. Step 3: Cross multiply
    20,468.54x = 30,702.81 × 8,624.18
  4. Step 4: Simplify right side
    20,468.54x = 264,786,559.95
  5. Step 5: Solve for x
    x = 264,786,559.95/20,468.54
  6. Step 6: Final answer
    x = 12,936.27

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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.