Home / 22,551.42-31,120.58-12,479.68

Finding the Fourth Proportional to 22,551.42, 31,120.58 and 12,479.68

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Solution

The fourth proportional to 22,551.42, 31,120.58 and 12,479.68 is: 17,221.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,551.42 : 31,120.58 = 12,479.68 : x
  2. Step 2: Convert to fraction form
    22,551.42/31,120.58 = 12,479.68/x
  3. Step 3: Cross multiply
    22,551.42x = 31,120.58 × 12,479.68
  4. Step 4: Simplify right side
    22,551.42x = 388,374,879.81
  5. Step 5: Solve for x
    x = 388,374,879.81/22,551.42
  6. Step 6: Final answer
    x = 17,221.75

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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.