Home / 18,672.12-28,009.80-9,906.84

Finding the Fourth Proportional to 18,672.12, 28,009.80 and 9,906.84

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Solution

The fourth proportional to 18,672.12, 28,009.80 and 9,906.84 is: 14,861.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.12 : 28,009.80 = 9,906.84 : x
  2. Step 2: Convert to fraction form
    18,672.12/28,009.80 = 9,906.84/x
  3. Step 3: Cross multiply
    18,672.12x = 28,009.80 × 9,906.84
  4. Step 4: Simplify right side
    18,672.12x = 277,488,607.03
  5. Step 5: Solve for x
    x = 277,488,607.03/18,672.12
  6. Step 6: Final answer
    x = 14,861.12

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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.