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Finding the Fourth Proportional to 18,676.40, 28,014.60 and 8,834.90

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Solution

The fourth proportional to 18,676.40, 28,014.60 and 8,834.90 is: 13,252.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.40 : 28,014.60 = 8,834.90 : x
  2. Step 2: Convert to fraction form
    18,676.40/28,014.60 = 8,834.90/x
  3. Step 3: Cross multiply
    18,676.40x = 28,014.60 × 8,834.90
  4. Step 4: Simplify right side
    18,676.40x = 247,506,189.54
  5. Step 5: Solve for x
    x = 247,506,189.54/18,676.40
  6. Step 6: Final answer
    x = 13,252.35

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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.