Home / 12,551.60-18,830.10-3,785.78

Finding the Fourth Proportional to 12,551.60, 18,830.10 and 3,785.78

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Solution

The fourth proportional to 12,551.60, 18,830.10 and 3,785.78 is: 5,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.60 : 18,830.10 = 3,785.78 : x
  2. Step 2: Convert to fraction form
    12,551.60/18,830.10 = 3,785.78/x
  3. Step 3: Cross multiply
    12,551.60x = 18,830.10 × 3,785.78
  4. Step 4: Simplify right side
    12,551.60x = 71,286,615.98
  5. Step 5: Solve for x
    x = 71,286,615.98/12,551.60
  6. Step 6: Final answer
    x = 5,679.48

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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.