Home / 20,154.18-30,155.22-18,107.88

Finding the Fourth Proportional to 20,154.18, 30,155.22 and 18,107.88

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Solution

The fourth proportional to 20,154.18, 30,155.22 and 18,107.88 is: 27,093.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.18 : 30,155.22 = 18,107.88 : x
  2. Step 2: Convert to fraction form
    20,154.18/30,155.22 = 18,107.88/x
  3. Step 3: Cross multiply
    20,154.18x = 30,155.22 × 18,107.88
  4. Step 4: Simplify right side
    20,154.18x = 546,047,105.13
  5. Step 5: Solve for x
    x = 546,047,105.13/20,154.18
  6. Step 6: Final answer
    x = 27,093.49

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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.