Home / 20,420.55-30,612.33-14,183.51

Finding the Fourth Proportional to 20,420.55, 30,612.33 and 14,183.51

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Solution

The fourth proportional to 20,420.55, 30,612.33 and 14,183.51 is: 21,262.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420.55 : 30,612.33 = 14,183.51 : x
  2. Step 2: Convert to fraction form
    20,420.55/30,612.33 = 14,183.51/x
  3. Step 3: Cross multiply
    20,420.55x = 30,612.33 × 14,183.51
  4. Step 4: Simplify right side
    20,420.55x = 434,190,135.62
  5. Step 5: Solve for x
    x = 434,190,135.62/20,420.55
  6. Step 6: Final answer
    x = 21,262.41

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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.