Home / 20,560.79-30,836.44-6,518.20

Finding the Fourth Proportional to 20,560.79, 30,836.44 and 6,518.20

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Solution

The fourth proportional to 20,560.79, 30,836.44 and 6,518.20 is: 9,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.79 : 30,836.44 = 6,518.20 : x
  2. Step 2: Convert to fraction form
    20,560.79/30,836.44 = 6,518.20/x
  3. Step 3: Cross multiply
    20,560.79x = 30,836.44 × 6,518.20
  4. Step 4: Simplify right side
    20,560.79x = 200,998,098.96
  5. Step 5: Solve for x
    x = 200,998,098.96/20,560.79
  6. Step 6: Final answer
    x = 9,775.80

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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.