Home / 18,912.06-28,385.60-9,558.68

Finding the Fourth Proportional to 18,912.06, 28,385.60 and 9,558.68

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Solution

The fourth proportional to 18,912.06, 28,385.60 and 9,558.68 is: 14,346.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.06 : 28,385.60 = 9,558.68 : x
  2. Step 2: Convert to fraction form
    18,912.06/28,385.60 = 9,558.68/x
  3. Step 3: Cross multiply
    18,912.06x = 28,385.60 × 9,558.68
  4. Step 4: Simplify right side
    18,912.06x = 271,328,677.29
  5. Step 5: Solve for x
    x = 271,328,677.29/18,912.06
  6. Step 6: Final answer
    x = 14,346.86

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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.