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Finding the Fourth Proportional to 18,750.10, 28,132.91 and 8,214.68

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Solution

The fourth proportional to 18,750.10, 28,132.91 and 8,214.68 is: 12,325.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.10 : 28,132.91 = 8,214.68 : x
  2. Step 2: Convert to fraction form
    18,750.10/28,132.91 = 8,214.68/x
  3. Step 3: Cross multiply
    18,750.10x = 28,132.91 × 8,214.68
  4. Step 4: Simplify right side
    18,750.10x = 231,102,853.12
  5. Step 5: Solve for x
    x = 231,102,853.12/18,750.10
  6. Step 6: Final answer
    x = 12,325.42

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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.