Home / 20,117.62-30,225.63-18,998.60

Finding the Fourth Proportional to 20,117.62, 30,225.63 and 18,998.60

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Solution

The fourth proportional to 20,117.62, 30,225.63 and 18,998.60 is: 28,544.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.62 : 30,225.63 = 18,998.60 : x
  2. Step 2: Convert to fraction form
    20,117.62/30,225.63 = 18,998.60/x
  3. Step 3: Cross multiply
    20,117.62x = 30,225.63 × 18,998.60
  4. Step 4: Simplify right side
    20,117.62x = 574,244,654.12
  5. Step 5: Solve for x
    x = 574,244,654.12/20,117.62
  6. Step 6: Final answer
    x = 28,544.36

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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.