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Finding the Fourth Proportional to 18,992.92, 28,491.54 and 7,304.08

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Solution

The fourth proportional to 18,992.92, 28,491.54 and 7,304.08 is: 10,956.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992.92 : 28,491.54 = 7,304.08 : x
  2. Step 2: Convert to fraction form
    18,992.92/28,491.54 = 7,304.08/x
  3. Step 3: Cross multiply
    18,992.92x = 28,491.54 × 7,304.08
  4. Step 4: Simplify right side
    18,992.92x = 208,104,487.48
  5. Step 5: Solve for x
    x = 208,104,487.48/18,992.92
  6. Step 6: Final answer
    x = 10,956.95

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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.