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Finding the Fourth Proportional to 20,511.47, 30,768.71 and 7,363.95

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Solution

The fourth proportional to 20,511.47, 30,768.71 and 7,363.95 is: 11,046.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.47 : 30,768.71 = 7,363.95 : x
  2. Step 2: Convert to fraction form
    20,511.47/30,768.71 = 7,363.95/x
  3. Step 3: Cross multiply
    20,511.47x = 30,768.71 × 7,363.95
  4. Step 4: Simplify right side
    20,511.47x = 226,579,242.00
  5. Step 5: Solve for x
    x = 226,579,242.00/20,511.47
  6. Step 6: Final answer
    x = 11,046.47

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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.