Home / 21,183.41-31,725-18,394.93

Finding the Fourth Proportional to 21,183.41, 31,725 and 18,394.93

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Solution

The fourth proportional to 21,183.41, 31,725 and 18,394.93 is: 27,548.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.41 : 31,725 = 18,394.93 : x
  2. Step 2: Convert to fraction form
    21,183.41/31,725 = 18,394.93/x
  3. Step 3: Cross multiply
    21,183.41x = 31,725 × 18,394.93
  4. Step 4: Simplify right side
    21,183.41x = 583,579,154.25
  5. Step 5: Solve for x
    x = 583,579,154.25/21,183.41
  6. Step 6: Final answer
    x = 27,548.88

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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.