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Finding the Fourth Proportional to 18,009.92, 26,981.13 and 10,592.21

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Solution

The fourth proportional to 18,009.92, 26,981.13 and 10,592.21 is: 15,868.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.92 : 26,981.13 = 10,592.21 : x
  2. Step 2: Convert to fraction form
    18,009.92/26,981.13 = 10,592.21/x
  3. Step 3: Cross multiply
    18,009.92x = 26,981.13 × 10,592.21
  4. Step 4: Simplify right side
    18,009.92x = 285,789,795.00
  5. Step 5: Solve for x
    x = 285,789,795.00/18,009.92
  6. Step 6: Final answer
    x = 15,868.47

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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.