Home / 20,886.66-28,827.70-11,933.33

Finding the Fourth Proportional to 20,886.66, 28,827.70 and 11,933.33

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Solution

The fourth proportional to 20,886.66, 28,827.70 and 11,933.33 is: 16,470.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.66 : 28,827.70 = 11,933.33 : x
  2. Step 2: Convert to fraction form
    20,886.66/28,827.70 = 11,933.33/x
  3. Step 3: Cross multiply
    20,886.66x = 28,827.70 × 11,933.33
  4. Step 4: Simplify right side
    20,886.66x = 344,010,283.27
  5. Step 5: Solve for x
    x = 344,010,283.27/20,886.66
  6. Step 6: Final answer
    x = 16,470.33

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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.