Home / 13,431.08-20,160.40-8,975.28

Finding the Fourth Proportional to 13,431.08, 20,160.40 and 8,975.28

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Solution

The fourth proportional to 13,431.08, 20,160.40 and 8,975.28 is: 13,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.08 : 20,160.40 = 8,975.28 : x
  2. Step 2: Convert to fraction form
    13,431.08/20,160.40 = 8,975.28/x
  3. Step 3: Cross multiply
    13,431.08x = 20,160.40 × 8,975.28
  4. Step 4: Simplify right side
    13,431.08x = 180,945,234.91
  5. Step 5: Solve for x
    x = 180,945,234.91/13,431.08
  6. Step 6: Final answer
    x = 13,472.13

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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.