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Finding the Fourth Proportional to 20,348.84, 30,486.80 and 7,192.82

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Solution

The fourth proportional to 20,348.84, 30,486.80 and 7,192.82 is: 10,776.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.84 : 30,486.80 = 7,192.82 : x
  2. Step 2: Convert to fraction form
    20,348.84/30,486.80 = 7,192.82/x
  3. Step 3: Cross multiply
    20,348.84x = 30,486.80 × 7,192.82
  4. Step 4: Simplify right side
    20,348.84x = 219,285,930.32
  5. Step 5: Solve for x
    x = 219,285,930.32/20,348.84
  6. Step 6: Final answer
    x = 10,776.34

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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.