Home / 22,550.77-31,120.10-12,479.64

Finding the Fourth Proportional to 22,550.77, 31,120.10 and 12,479.64

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Solution

The fourth proportional to 22,550.77, 31,120.10 and 12,479.64 is: 17,221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,550.77 : 31,120.10 = 12,479.64 : x
  2. Step 2: Convert to fraction form
    22,550.77/31,120.10 = 12,479.64/x
  3. Step 3: Cross multiply
    22,550.77x = 31,120.10 × 12,479.64
  4. Step 4: Simplify right side
    22,550.77x = 388,367,644.76
  5. Step 5: Solve for x
    x = 388,367,644.76/22,550.77
  6. Step 6: Final answer
    x = 17,221.92

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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.