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Finding the Fourth Proportional to 18,637.86, 27,950.79 and 6,154.98

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Solution

The fourth proportional to 18,637.86, 27,950.79 and 6,154.98 is: 9,230.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.86 : 27,950.79 = 6,154.98 : x
  2. Step 2: Convert to fraction form
    18,637.86/27,950.79 = 6,154.98/x
  3. Step 3: Cross multiply
    18,637.86x = 27,950.79 × 6,154.98
  4. Step 4: Simplify right side
    18,637.86x = 172,036,553.43
  5. Step 5: Solve for x
    x = 172,036,553.43/18,637.86
  6. Step 6: Final answer
    x = 9,230.49

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Half scale
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Double scale
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Similar ratio
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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.