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Finding the Fourth Proportional to 20,060.46, 30,068.82 and 17,129.88

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Solution

The fourth proportional to 20,060.46, 30,068.82 and 17,129.88 is: 25,676.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,060.46 : 30,068.82 = 17,129.88 : x
  2. Step 2: Convert to fraction form
    20,060.46/30,068.82 = 17,129.88/x
  3. Step 3: Cross multiply
    20,060.46x = 30,068.82 × 17,129.88
  4. Step 4: Simplify right side
    20,060.46x = 515,075,278.34
  5. Step 5: Solve for x
    x = 515,075,278.34/20,060.46
  6. Step 6: Final answer
    x = 25,676.14

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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.