Home / 22,737.77-31,379.07-12,666.21

Finding the Fourth Proportional to 22,737.77, 31,379.07 and 12,666.21

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Solution

The fourth proportional to 22,737.77, 31,379.07 and 12,666.21 is: 17,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,737.77 : 31,379.07 = 12,666.21 : x
  2. Step 2: Convert to fraction form
    22,737.77/31,379.07 = 12,666.21/x
  3. Step 3: Cross multiply
    22,737.77x = 31,379.07 × 12,666.21
  4. Step 4: Simplify right side
    22,737.77x = 397,453,996.56
  5. Step 5: Solve for x
    x = 397,453,996.56/22,737.77
  6. Step 6: Final answer
    x = 17,479.90

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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.