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Finding the Fourth Proportional to 20,254.34, 30,384.54 and 7,104.39

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Solution

The fourth proportional to 20,254.34, 30,384.54 and 7,104.39 is: 10,657.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,254.34 : 30,384.54 = 7,104.39 : x
  2. Step 2: Convert to fraction form
    20,254.34/30,384.54 = 7,104.39/x
  3. Step 3: Cross multiply
    20,254.34x = 30,384.54 × 7,104.39
  4. Step 4: Simplify right side
    20,254.34x = 215,863,622.13
  5. Step 5: Solve for x
    x = 215,863,622.13/20,254.34
  6. Step 6: Final answer
    x = 10,657.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.