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Finding the Fourth Proportional to 18,456.01, 27,692.12 and 9,688.88

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Solution

The fourth proportional to 18,456.01, 27,692.12 and 9,688.88 is: 14,537.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.01 : 27,692.12 = 9,688.88 : x
  2. Step 2: Convert to fraction form
    18,456.01/27,692.12 = 9,688.88/x
  3. Step 3: Cross multiply
    18,456.01x = 27,692.12 × 9,688.88
  4. Step 4: Simplify right side
    18,456.01x = 268,305,721.08
  5. Step 5: Solve for x
    x = 268,305,721.08/18,456.01
  6. Step 6: Final answer
    x = 14,537.58

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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.