Home / 18,579.65-27,871.95-5,431.83

Finding the Fourth Proportional to 18,579.65, 27,871.95 and 5,431.83

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Solution

The fourth proportional to 18,579.65, 27,871.95 and 5,431.83 is: 8,148.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.65 : 27,871.95 = 5,431.83 : x
  2. Step 2: Convert to fraction form
    18,579.65/27,871.95 = 5,431.83/x
  3. Step 3: Cross multiply
    18,579.65x = 27,871.95 × 5,431.83
  4. Step 4: Simplify right side
    18,579.65x = 151,395,579.46
  5. Step 5: Solve for x
    x = 151,395,579.46/18,579.65
  6. Step 6: Final answer
    x = 8,148.46

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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.