Home / 20,605.31-30,910.37-6,560.42

Finding the Fourth Proportional to 20,605.31, 30,910.37 and 6,560.42

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Solution

The fourth proportional to 20,605.31, 30,910.37 and 6,560.42 is: 9,841.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.31 : 30,910.37 = 6,560.42 : x
  2. Step 2: Convert to fraction form
    20,605.31/30,910.37 = 6,560.42/x
  3. Step 3: Cross multiply
    20,605.31x = 30,910.37 × 6,560.42
  4. Step 4: Simplify right side
    20,605.31x = 202,784,822.20
  5. Step 5: Solve for x
    x = 202,784,822.20/20,605.31
  6. Step 6: Final answer
    x = 9,841.39

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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.