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Finding the Fourth Proportional to 18,672.50, 28,014.92 and 6,829.89

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Solution

The fourth proportional to 18,672.50, 28,014.92 and 6,829.89 is: 10,247.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.50 : 28,014.92 = 6,829.89 : x
  2. Step 2: Convert to fraction form
    18,672.50/28,014.92 = 6,829.89/x
  3. Step 3: Cross multiply
    18,672.50x = 28,014.92 × 6,829.89
  4. Step 4: Simplify right side
    18,672.50x = 191,338,787.81
  5. Step 5: Solve for x
    x = 191,338,787.81/18,672.50
  6. Step 6: Final answer
    x = 10,247.09

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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.