Home / 20,369.48-28,109.09-11,872.04

Finding the Fourth Proportional to 20,369.48, 28,109.09 and 11,872.04

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Solution

The fourth proportional to 20,369.48, 28,109.09 and 11,872.04 is: 16,382.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.48 : 28,109.09 = 11,872.04 : x
  2. Step 2: Convert to fraction form
    20,369.48/28,109.09 = 11,872.04/x
  3. Step 3: Cross multiply
    20,369.48x = 28,109.09 × 11,872.04
  4. Step 4: Simplify right side
    20,369.48x = 333,712,129.98
  5. Step 5: Solve for x
    x = 333,712,129.98/20,369.48
  6. Step 6: Final answer
    x = 16,382.95

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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.