Home / 20,649.96-30,979.26-10,256.04

Finding the Fourth Proportional to 20,649.96, 30,979.26 and 10,256.04

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Solution

The fourth proportional to 20,649.96, 30,979.26 and 10,256.04 is: 15,386.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.96 : 30,979.26 = 10,256.04 : x
  2. Step 2: Convert to fraction form
    20,649.96/30,979.26 = 10,256.04/x
  3. Step 3: Cross multiply
    20,649.96x = 30,979.26 × 10,256.04
  4. Step 4: Simplify right side
    20,649.96x = 317,724,529.73
  5. Step 5: Solve for x
    x = 317,724,529.73/20,649.96
  6. Step 6: Final answer
    x = 15,386.21

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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.