Home / 15,743.78-23,617.40-5,209.96

Finding the Fourth Proportional to 15,743.78, 23,617.40 and 5,209.96

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Solution

The fourth proportional to 15,743.78, 23,617.40 and 5,209.96 is: 7,815.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.78 : 23,617.40 = 5,209.96 : x
  2. Step 2: Convert to fraction form
    15,743.78/23,617.40 = 5,209.96/x
  3. Step 3: Cross multiply
    15,743.78x = 23,617.40 × 5,209.96
  4. Step 4: Simplify right side
    15,743.78x = 123,045,709.30
  5. Step 5: Solve for x
    x = 123,045,709.30/15,743.78
  6. Step 6: Final answer
    x = 7,815.51

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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.