Home / 13,610.72-18,780.36-8,231.60

Finding the Fourth Proportional to 13,610.72, 18,780.36 and 8,231.60

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Solution

The fourth proportional to 13,610.72, 18,780.36 and 8,231.60 is: 11,358.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.72 : 18,780.36 = 8,231.60 : x
  2. Step 2: Convert to fraction form
    13,610.72/18,780.36 = 8,231.60/x
  3. Step 3: Cross multiply
    13,610.72x = 18,780.36 × 8,231.60
  4. Step 4: Simplify right side
    13,610.72x = 154,592,411.38
  5. Step 5: Solve for x
    x = 154,592,411.38/13,610.72
  6. Step 6: Final answer
    x = 11,358.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.