Home / 27,928.80-41,869.65-12,121.92

Finding the Fourth Proportional to 27,928.80, 41,869.65 and 12,121.92

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Solution

The fourth proportional to 27,928.80, 41,869.65 and 12,121.92 is: 18,172.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,928.80 : 41,869.65 = 12,121.92 : x
  2. Step 2: Convert to fraction form
    27,928.80/41,869.65 = 12,121.92/x
  3. Step 3: Cross multiply
    27,928.80x = 41,869.65 × 12,121.92
  4. Step 4: Simplify right side
    27,928.80x = 507,540,547.73
  5. Step 5: Solve for x
    x = 507,540,547.73/27,928.80
  6. Step 6: Final answer
    x = 18,172.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.