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Finding the Fourth Proportional to 15,745.36, 23,609.04 and 6,389.92

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Solution

The fourth proportional to 15,745.36, 23,609.04 and 6,389.92 is: 9,581.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.36 : 23,609.04 = 6,389.92 : x
  2. Step 2: Convert to fraction form
    15,745.36/23,609.04 = 6,389.92/x
  3. Step 3: Cross multiply
    15,745.36x = 23,609.04 × 6,389.92
  4. Step 4: Simplify right side
    15,745.36x = 150,859,876.88
  5. Step 5: Solve for x
    x = 150,859,876.88/15,745.36
  6. Step 6: Final answer
    x = 9,581.23

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1.5x scale

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.