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Finding the Fourth Proportional to 18,989.23, 26,205.02 and 10,491.92

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Solution

The fourth proportional to 18,989.23, 26,205.02 and 10,491.92 is: 14,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.23 : 26,205.02 = 10,491.92 : x
  2. Step 2: Convert to fraction form
    18,989.23/26,205.02 = 10,491.92/x
  3. Step 3: Cross multiply
    18,989.23x = 26,205.02 × 10,491.92
  4. Step 4: Simplify right side
    18,989.23x = 274,940,920.98
  5. Step 5: Solve for x
    x = 274,940,920.98/18,989.23
  6. Step 6: Final answer
    x = 14,478.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.