Home / 20,517.06-30,775.80-6,476.82

Finding the Fourth Proportional to 20,517.06, 30,775.80 and 6,476.82

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Solution

The fourth proportional to 20,517.06, 30,775.80 and 6,476.82 is: 9,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.06 : 30,775.80 = 6,476.82 : x
  2. Step 2: Convert to fraction form
    20,517.06/30,775.80 = 6,476.82/x
  3. Step 3: Cross multiply
    20,517.06x = 30,775.80 × 6,476.82
  4. Step 4: Simplify right side
    20,517.06x = 199,329,316.96
  5. Step 5: Solve for x
    x = 199,329,316.96/20,517.06
  6. Step 6: Final answer
    x = 9,715.30

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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.