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Finding the Fourth Proportional to 22,450.61, 30,983.21 and 12,379.01

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Solution

The fourth proportional to 22,450.61, 30,983.21 and 12,379.01 is: 17,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,450.61 : 30,983.21 = 12,379.01 : x
  2. Step 2: Convert to fraction form
    22,450.61/30,983.21 = 12,379.01/x
  3. Step 3: Cross multiply
    22,450.61x = 30,983.21 × 12,379.01
  4. Step 4: Simplify right side
    22,450.61x = 383,541,574.83
  5. Step 5: Solve for x
    x = 383,541,574.83/22,450.61
  6. Step 6: Final answer
    x = 17,083.80

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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.