Home / 13,718.18-20,579.58-5,393.79

Finding the Fourth Proportional to 13,718.18, 20,579.58 and 5,393.79

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Solution

The fourth proportional to 13,718.18, 20,579.58 and 5,393.79 is: 8,091.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.18 : 20,579.58 = 5,393.79 : x
  2. Step 2: Convert to fraction form
    13,718.18/20,579.58 = 5,393.79/x
  3. Step 3: Cross multiply
    13,718.18x = 20,579.58 × 5,393.79
  4. Step 4: Simplify right side
    13,718.18x = 111,001,932.81
  5. Step 5: Solve for x
    x = 111,001,932.81/13,718.18
  6. Step 6: Final answer
    x = 8,091.59

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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.