Home / 13,828.35-20,641.56-11,866.56

Finding the Fourth Proportional to 13,828.35, 20,641.56 and 11,866.56

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Solution

The fourth proportional to 13,828.35, 20,641.56 and 11,866.56 is: 17,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.35 : 20,641.56 = 11,866.56 : x
  2. Step 2: Convert to fraction form
    13,828.35/20,641.56 = 11,866.56/x
  3. Step 3: Cross multiply
    13,828.35x = 20,641.56 × 11,866.56
  4. Step 4: Simplify right side
    13,828.35x = 244,944,310.23
  5. Step 5: Solve for x
    x = 244,944,310.23/13,828.35
  6. Step 6: Final answer
    x = 17,713.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.