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Finding the Fourth Proportional to 18,992.81, 28,489.23 and 4,952.82

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Solution

The fourth proportional to 18,992.81, 28,489.23 and 4,952.82 is: 7,429.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992.81 : 28,489.23 = 4,952.82 : x
  2. Step 2: Convert to fraction form
    18,992.81/28,489.23 = 4,952.82/x
  3. Step 3: Cross multiply
    18,992.81x = 28,489.23 × 4,952.82
  4. Step 4: Simplify right side
    18,992.81x = 141,102,153.54
  5. Step 5: Solve for x
    x = 141,102,153.54/18,992.81
  6. Step 6: Final answer
    x = 7,429.24

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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.