Home / 20,997.50-28,968.23-14,622.39

Finding the Fourth Proportional to 20,997.50, 28,968.23 and 14,622.39

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Solution

The fourth proportional to 20,997.50, 28,968.23 and 14,622.39 is: 20,173.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.50 : 28,968.23 = 14,622.39 : x
  2. Step 2: Convert to fraction form
    20,997.50/28,968.23 = 14,622.39/x
  3. Step 3: Cross multiply
    20,997.50x = 28,968.23 × 14,622.39
  4. Step 4: Simplify right side
    20,997.50x = 423,584,793.23
  5. Step 5: Solve for x
    x = 423,584,793.23/20,997.50
  6. Step 6: Final answer
    x = 20,173.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.