Home / 20,716.14-28,588.83-11,285.31

Finding the Fourth Proportional to 20,716.14, 28,588.83 and 11,285.31

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Solution

The fourth proportional to 20,716.14, 28,588.83 and 11,285.31 is: 15,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.14 : 28,588.83 = 11,285.31 : x
  2. Step 2: Convert to fraction form
    20,716.14/28,588.83 = 11,285.31/x
  3. Step 3: Cross multiply
    20,716.14x = 28,588.83 × 11,285.31
  4. Step 4: Simplify right side
    20,716.14x = 322,633,809.09
  5. Step 5: Solve for x
    x = 322,633,809.09/20,716.14
  6. Step 6: Final answer
    x = 15,574.03

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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.