Home / 12,137.64-18,205.22-3,817.72

Finding the Fourth Proportional to 12,137.64, 18,205.22 and 3,817.72

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Solution

The fourth proportional to 12,137.64, 18,205.22 and 3,817.72 is: 5,726.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.64 : 18,205.22 = 3,817.72 : x
  2. Step 2: Convert to fraction form
    12,137.64/18,205.22 = 3,817.72/x
  3. Step 3: Cross multiply
    12,137.64x = 18,205.22 × 3,817.72
  4. Step 4: Simplify right side
    12,137.64x = 69,502,432.50
  5. Step 5: Solve for x
    x = 69,502,432.50/12,137.64
  6. Step 6: Final answer
    x = 5,726.19

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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.