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Finding the Fourth Proportional to 20,174.20, 30,203.70 and 19,598.20

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Solution

The fourth proportional to 20,174.20, 30,203.70 and 19,598.20 is: 29,341.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.20 : 30,203.70 = 19,598.20 : x
  2. Step 2: Convert to fraction form
    20,174.20/30,203.70 = 19,598.20/x
  3. Step 3: Cross multiply
    20,174.20x = 30,203.70 × 19,598.20
  4. Step 4: Simplify right side
    20,174.20x = 591,938,153.34
  5. Step 5: Solve for x
    x = 591,938,153.34/20,174.20
  6. Step 6: Final answer
    x = 29,341.34

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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.