Home / 22,521.81-31,078.74-12,449.65

Finding the Fourth Proportional to 22,521.81, 31,078.74 and 12,449.65

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Solution

The fourth proportional to 22,521.81, 31,078.74 and 12,449.65 is: 17,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,521.81 : 31,078.74 = 12,449.65 : x
  2. Step 2: Convert to fraction form
    22,521.81/31,078.74 = 12,449.65/x
  3. Step 3: Cross multiply
    22,521.81x = 31,078.74 × 12,449.65
  4. Step 4: Simplify right side
    22,521.81x = 386,919,435.44
  5. Step 5: Solve for x
    x = 386,919,435.44/22,521.81
  6. Step 6: Final answer
    x = 17,179.77

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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.