Home / 22,550.09-31,120.68-12,478.96

Finding the Fourth Proportional to 22,550.09, 31,120.68 and 12,478.96

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Solution

The fourth proportional to 22,550.09, 31,120.68 and 12,478.96 is: 17,221.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,550.09 : 31,120.68 = 12,478.96 : x
  2. Step 2: Convert to fraction form
    22,550.09/31,120.68 = 12,478.96/x
  3. Step 3: Cross multiply
    22,550.09x = 31,120.68 × 12,478.96
  4. Step 4: Simplify right side
    22,550.09x = 388,353,565.29
  5. Step 5: Solve for x
    x = 388,353,565.29/22,550.09
  6. Step 6: Final answer
    x = 17,221.82

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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.