Home / 20,164.66-30,187.85-14,139.86

Finding the Fourth Proportional to 20,164.66, 30,187.85 and 14,139.86

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Solution

The fourth proportional to 20,164.66, 30,187.85 and 14,139.86 is: 21,168.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,164.66 : 30,187.85 = 14,139.86 : x
  2. Step 2: Convert to fraction form
    20,164.66/30,187.85 = 14,139.86/x
  3. Step 3: Cross multiply
    20,164.66x = 30,187.85 × 14,139.86
  4. Step 4: Simplify right side
    20,164.66x = 426,851,751.06
  5. Step 5: Solve for x
    x = 426,851,751.06/20,164.66
  6. Step 6: Final answer
    x = 21,168.31

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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.