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Finding the Fourth Proportional to 20,348.87, 28,053.87 and 17,396.42

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Solution

The fourth proportional to 20,348.87, 28,053.87 and 17,396.42 is: 23,983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.87 : 28,053.87 = 17,396.42 : x
  2. Step 2: Convert to fraction form
    20,348.87/28,053.87 = 17,396.42/x
  3. Step 3: Cross multiply
    20,348.87x = 28,053.87 × 17,396.42
  4. Step 4: Simplify right side
    20,348.87x = 488,036,905.15
  5. Step 5: Solve for x
    x = 488,036,905.15/20,348.87
  6. Step 6: Final answer
    x = 23,983.49

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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.