Home / 20,172.60-30,224.16-15,739.02

Finding the Fourth Proportional to 20,172.60, 30,224.16 and 15,739.02

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Solution

The fourth proportional to 20,172.60, 30,224.16 and 15,739.02 is: 23,581.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.60 : 30,224.16 = 15,739.02 : x
  2. Step 2: Convert to fraction form
    20,172.60/30,224.16 = 15,739.02/x
  3. Step 3: Cross multiply
    20,172.60x = 30,224.16 × 15,739.02
  4. Step 4: Simplify right side
    20,172.60x = 475,698,658.72
  5. Step 5: Solve for x
    x = 475,698,658.72/20,172.60
  6. Step 6: Final answer
    x = 23,581.43

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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.