Home / 20,171.10-30,220.20-17,838.30

Finding the Fourth Proportional to 20,171.10, 30,220.20 and 17,838.30

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Solution

The fourth proportional to 20,171.10, 30,220.20 and 17,838.30 is: 26,725.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.10 : 30,220.20 = 17,838.30 : x
  2. Step 2: Convert to fraction form
    20,171.10/30,220.20 = 17,838.30/x
  3. Step 3: Cross multiply
    20,171.10x = 30,220.20 × 17,838.30
  4. Step 4: Simplify right side
    20,171.10x = 539,076,993.66
  5. Step 5: Solve for x
    x = 539,076,993.66/20,171.10
  6. Step 6: Final answer
    x = 26,725.22

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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.