Home / 20,516.49-30,774.20-6,475.95

Finding the Fourth Proportional to 20,516.49, 30,774.20 and 6,475.95

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Solution

The fourth proportional to 20,516.49, 30,774.20 and 6,475.95 is: 9,713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.49 : 30,774.20 = 6,475.95 : x
  2. Step 2: Convert to fraction form
    20,516.49/30,774.20 = 6,475.95/x
  3. Step 3: Cross multiply
    20,516.49x = 30,774.20 × 6,475.95
  4. Step 4: Simplify right side
    20,516.49x = 199,292,148.11
  5. Step 5: Solve for x
    x = 199,292,148.11/20,516.49
  6. Step 6: Final answer
    x = 9,713.75

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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.