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Finding the Fourth Proportional to 18,684.60, 28,030.14 and 6,205.20

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Solution

The fourth proportional to 18,684.60, 28,030.14 and 6,205.20 is: 9,308.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.60 : 28,030.14 = 6,205.20 : x
  2. Step 2: Convert to fraction form
    18,684.60/28,030.14 = 6,205.20/x
  3. Step 3: Cross multiply
    18,684.60x = 28,030.14 × 6,205.20
  4. Step 4: Simplify right side
    18,684.60x = 173,932,624.73
  5. Step 5: Solve for x
    x = 173,932,624.73/18,684.60
  6. Step 6: Final answer
    x = 9,308.88

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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.