Home / 20,518.49-30,777.19-6,477.95

Finding the Fourth Proportional to 20,518.49, 30,777.19 and 6,477.95

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Solution

The fourth proportional to 20,518.49, 30,777.19 and 6,477.95 is: 9,716.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518.49 : 30,777.19 = 6,477.95 : x
  2. Step 2: Convert to fraction form
    20,518.49/30,777.19 = 6,477.95/x
  3. Step 3: Cross multiply
    20,518.49x = 30,777.19 × 6,477.95
  4. Step 4: Simplify right side
    20,518.49x = 199,373,097.96
  5. Step 5: Solve for x
    x = 199,373,097.96/20,518.49
  6. Step 6: Final answer
    x = 9,716.75

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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.