Home / 20,649.28-30,995.76-12,863.44

Finding the Fourth Proportional to 20,649.28, 30,995.76 and 12,863.44

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Solution

The fourth proportional to 20,649.28, 30,995.76 and 12,863.44 is: 19,308.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.28 : 30,995.76 = 12,863.44 : x
  2. Step 2: Convert to fraction form
    20,649.28/30,995.76 = 12,863.44/x
  3. Step 3: Cross multiply
    20,649.28x = 30,995.76 × 12,863.44
  4. Step 4: Simplify right side
    20,649.28x = 398,712,099.01
  5. Step 5: Solve for x
    x = 398,712,099.01/20,649.28
  6. Step 6: Final answer
    x = 19,308.77

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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.