Home / 20,888.61-28,824.39-11,936.07

Finding the Fourth Proportional to 20,888.61, 28,824.39 and 11,936.07

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Solution

The fourth proportional to 20,888.61, 28,824.39 and 11,936.07 is: 16,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.61 : 28,824.39 = 11,936.07 : x
  2. Step 2: Convert to fraction form
    20,888.61/28,824.39 = 11,936.07/x
  3. Step 3: Cross multiply
    20,888.61x = 28,824.39 × 11,936.07
  4. Step 4: Simplify right side
    20,888.61x = 344,049,936.75
  5. Step 5: Solve for x
    x = 344,049,936.75/20,888.61
  6. Step 6: Final answer
    x = 16,470.70

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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.