Home / 13,712.56-18,922.25-7,744.82

Finding the Fourth Proportional to 13,712.56, 18,922.25 and 7,744.82

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Solution

The fourth proportional to 13,712.56, 18,922.25 and 7,744.82 is: 10,687.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.56 : 18,922.25 = 7,744.82 : x
  2. Step 2: Convert to fraction form
    13,712.56/18,922.25 = 7,744.82/x
  3. Step 3: Cross multiply
    13,712.56x = 18,922.25 × 7,744.82
  4. Step 4: Simplify right side
    13,712.56x = 146,549,345.00
  5. Step 5: Solve for x
    x = 146,549,345.00/13,712.56
  6. Step 6: Final answer
    x = 10,687.24

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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.