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Finding the Fourth Proportional to 18,801.84, 28,334.85 and 16,930.02

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Solution

The fourth proportional to 18,801.84, 28,334.85 and 16,930.02 is: 25,513.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.84 : 28,334.85 = 16,930.02 : x
  2. Step 2: Convert to fraction form
    18,801.84/28,334.85 = 16,930.02/x
  3. Step 3: Cross multiply
    18,801.84x = 28,334.85 × 16,930.02
  4. Step 4: Simplify right side
    18,801.84x = 479,709,577.20
  5. Step 5: Solve for x
    x = 479,709,577.20/18,801.84
  6. Step 6: Final answer
    x = 25,513.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.