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Finding the Fourth Proportional to 18,822.94, 28,203.82 and 9,937.78

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Solution

The fourth proportional to 18,822.94, 28,203.82 and 9,937.78 is: 14,890.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.94 : 28,203.82 = 9,937.78 : x
  2. Step 2: Convert to fraction form
    18,822.94/28,203.82 = 9,937.78/x
  3. Step 3: Cross multiply
    18,822.94x = 28,203.82 × 9,937.78
  4. Step 4: Simplify right side
    18,822.94x = 280,283,262.97
  5. Step 5: Solve for x
    x = 280,283,262.97/18,822.94
  6. Step 6: Final answer
    x = 14,890.52

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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.