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Finding the Fourth Proportional to 20,371.88, 30,566.54 and 8,528.42

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Solution

The fourth proportional to 20,371.88, 30,566.54 and 8,528.42 is: 12,796.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.88 : 30,566.54 = 8,528.42 : x
  2. Step 2: Convert to fraction form
    20,371.88/30,566.54 = 8,528.42/x
  3. Step 3: Cross multiply
    20,371.88x = 30,566.54 × 8,528.42
  4. Step 4: Simplify right side
    20,371.88x = 260,684,248.42
  5. Step 5: Solve for x
    x = 260,684,248.42/20,371.88
  6. Step 6: Final answer
    x = 12,796.28

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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.