Home / 20,499.13-30,757.63-7,181.68

Finding the Fourth Proportional to 20,499.13, 30,757.63 and 7,181.68

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Solution

The fourth proportional to 20,499.13, 30,757.63 and 7,181.68 is: 10,775.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.13 : 30,757.63 = 7,181.68 : x
  2. Step 2: Convert to fraction form
    20,499.13/30,757.63 = 7,181.68/x
  3. Step 3: Cross multiply
    20,499.13x = 30,757.63 × 7,181.68
  4. Step 4: Simplify right side
    20,499.13x = 220,891,266.52
  5. Step 5: Solve for x
    x = 220,891,266.52/20,499.13
  6. Step 6: Final answer
    x = 10,775.64

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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.