Home / 20,440.88-30,719.64-10,059.92

Finding the Fourth Proportional to 20,440.88, 30,719.64 and 10,059.92

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Solution

The fourth proportional to 20,440.88, 30,719.64 and 10,059.92 is: 15,118.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.88 : 30,719.64 = 10,059.92 : x
  2. Step 2: Convert to fraction form
    20,440.88/30,719.64 = 10,059.92/x
  3. Step 3: Cross multiply
    20,440.88x = 30,719.64 × 10,059.92
  4. Step 4: Simplify right side
    20,440.88x = 309,037,120.83
  5. Step 5: Solve for x
    x = 309,037,120.83/20,440.88
  6. Step 6: Final answer
    x = 15,118.58

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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.