Home / 21,329.56-31,947.54-17,589.64

Finding the Fourth Proportional to 21,329.56, 31,947.54 and 17,589.64

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Solution

The fourth proportional to 21,329.56, 31,947.54 and 17,589.64 is: 26,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.56 : 31,947.54 = 17,589.64 : x
  2. Step 2: Convert to fraction form
    21,329.56/31,947.54 = 17,589.64/x
  3. Step 3: Cross multiply
    21,329.56x = 31,947.54 × 17,589.64
  4. Step 4: Simplify right side
    21,329.56x = 561,945,727.49
  5. Step 5: Solve for x
    x = 561,945,727.49/21,329.56
  6. Step 6: Final answer
    x = 26,345.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.