Home / 21,767.65-30,039.61-12,209.55

Finding the Fourth Proportional to 21,767.65, 30,039.61 and 12,209.55

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Solution

The fourth proportional to 21,767.65, 30,039.61 and 12,209.55 is: 16,849.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,767.65 : 30,039.61 = 12,209.55 : x
  2. Step 2: Convert to fraction form
    21,767.65/30,039.61 = 12,209.55/x
  3. Step 3: Cross multiply
    21,767.65x = 30,039.61 × 12,209.55
  4. Step 4: Simplify right side
    21,767.65x = 366,770,168.97
  5. Step 5: Solve for x
    x = 366,770,168.97/21,767.65
  6. Step 6: Final answer
    x = 16,849.32

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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.