Home / 20,906.10-31,402.89-17,625.60

Finding the Fourth Proportional to 20,906.10, 31,402.89 and 17,625.60

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Solution

The fourth proportional to 20,906.10, 31,402.89 and 17,625.60 is: 26,475.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.10 : 31,402.89 = 17,625.60 : x
  2. Step 2: Convert to fraction form
    20,906.10/31,402.89 = 17,625.60/x
  3. Step 3: Cross multiply
    20,906.10x = 31,402.89 × 17,625.60
  4. Step 4: Simplify right side
    20,906.10x = 553,494,777.98
  5. Step 5: Solve for x
    x = 553,494,777.98/20,906.10
  6. Step 6: Final answer
    x = 26,475.28

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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.