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Finding the Fourth Proportional to 18,827.85, 28,237.05 and 7,737.60

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Solution

The fourth proportional to 18,827.85, 28,237.05 and 7,737.60 is: 11,604.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,827.85 : 28,237.05 = 7,737.60 : x
  2. Step 2: Convert to fraction form
    18,827.85/28,237.05 = 7,737.60/x
  3. Step 3: Cross multiply
    18,827.85x = 28,237.05 × 7,737.60
  4. Step 4: Simplify right side
    18,827.85x = 218,486,998.08
  5. Step 5: Solve for x
    x = 218,486,998.08/18,827.85
  6. Step 6: Final answer
    x = 11,604.46

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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.