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Finding the Fourth Proportional to 12,000.60, 18,000.90 and 9,922.95

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Solution

The fourth proportional to 12,000.60, 18,000.90 and 9,922.95 is: 14,884.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.60 : 18,000.90 = 9,922.95 : x
  2. Step 2: Convert to fraction form
    12,000.60/18,000.90 = 9,922.95/x
  3. Step 3: Cross multiply
    12,000.60x = 18,000.90 × 9,922.95
  4. Step 4: Simplify right side
    12,000.60x = 178,622,030.66
  5. Step 5: Solve for x
    x = 178,622,030.66/12,000.60
  6. Step 6: Final answer
    x = 14,884.43

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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.