Home / 12,477.74-18,720.17-4,163.19

Finding the Fourth Proportional to 12,477.74, 18,720.17 and 4,163.19

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Solution

The fourth proportional to 12,477.74, 18,720.17 and 4,163.19 is: 6,245.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.74 : 18,720.17 = 4,163.19 : x
  2. Step 2: Convert to fraction form
    12,477.74/18,720.17 = 4,163.19/x
  3. Step 3: Cross multiply
    12,477.74x = 18,720.17 × 4,163.19
  4. Step 4: Simplify right side
    12,477.74x = 77,935,634.95
  5. Step 5: Solve for x
    x = 77,935,634.95/12,477.74
  6. Step 6: Final answer
    x = 6,245.98

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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.