Home / 20,127.28-30,181.21-8,437.36

Finding the Fourth Proportional to 20,127.28, 30,181.21 and 8,437.36

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Solution

The fourth proportional to 20,127.28, 30,181.21 and 8,437.36 is: 12,651.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.28 : 30,181.21 = 8,437.36 : x
  2. Step 2: Convert to fraction form
    20,127.28/30,181.21 = 8,437.36/x
  3. Step 3: Cross multiply
    20,127.28x = 30,181.21 × 8,437.36
  4. Step 4: Simplify right side
    20,127.28x = 254,649,734.01
  5. Step 5: Solve for x
    x = 254,649,734.01/20,127.28
  6. Step 6: Final answer
    x = 12,651.97

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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.