Home / 12,415.20-18,618.84-4,093.66

Finding the Fourth Proportional to 12,415.20, 18,618.84 and 4,093.66

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Solution

The fourth proportional to 12,415.20, 18,618.84 and 4,093.66 is: 6,139.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.20 : 18,618.84 = 4,093.66 : x
  2. Step 2: Convert to fraction form
    12,415.20/18,618.84 = 4,093.66/x
  3. Step 3: Cross multiply
    12,415.20x = 18,618.84 × 4,093.66
  4. Step 4: Simplify right side
    12,415.20x = 76,219,200.55
  5. Step 5: Solve for x
    x = 76,219,200.55/12,415.20
  6. Step 6: Final answer
    x = 6,139.18

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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.