Home / 20,364.36-30,491.10-15,419.04

Finding the Fourth Proportional to 20,364.36, 30,491.10 and 15,419.04

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Solution

The fourth proportional to 20,364.36, 30,491.10 and 15,419.04 is: 23,086.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.36 : 30,491.10 = 15,419.04 : x
  2. Step 2: Convert to fraction form
    20,364.36/30,491.10 = 15,419.04/x
  3. Step 3: Cross multiply
    20,364.36x = 30,491.10 × 15,419.04
  4. Step 4: Simplify right side
    20,364.36x = 470,143,490.54
  5. Step 5: Solve for x
    x = 470,143,490.54/20,364.36
  6. Step 6: Final answer
    x = 23,086.58

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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.