Home / 12,555.24-18,830.10-3,787.80

Finding the Fourth Proportional to 12,555.24, 18,830.10 and 3,787.80

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Solution

The fourth proportional to 12,555.24, 18,830.10 and 3,787.80 is: 5,680.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.24 : 18,830.10 = 3,787.80 : x
  2. Step 2: Convert to fraction form
    12,555.24/18,830.10 = 3,787.80/x
  3. Step 3: Cross multiply
    12,555.24x = 18,830.10 × 3,787.80
  4. Step 4: Simplify right side
    12,555.24x = 71,324,652.78
  5. Step 5: Solve for x
    x = 71,324,652.78/12,555.24
  6. Step 6: Final answer
    x = 5,680.87

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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.