Home / 20,426.96-30,621.96-14,189.90

Finding the Fourth Proportional to 20,426.96, 30,621.96 and 14,189.90

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Solution

The fourth proportional to 20,426.96, 30,621.96 and 14,189.90 is: 21,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.96 : 30,621.96 = 14,189.90 : x
  2. Step 2: Convert to fraction form
    20,426.96/30,621.96 = 14,189.90/x
  3. Step 3: Cross multiply
    20,426.96x = 30,621.96 × 14,189.90
  4. Step 4: Simplify right side
    20,426.96x = 434,522,550.20
  5. Step 5: Solve for x
    x = 434,522,550.20/20,426.96
  6. Step 6: Final answer
    x = 21,272.01

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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.