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Finding the Fourth Proportional to 13,610.91, 20,401.95 and 7,754.97

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Solution

The fourth proportional to 13,610.91, 20,401.95 and 7,754.97 is: 11,624.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.91 : 20,401.95 = 7,754.97 : x
  2. Step 2: Convert to fraction form
    13,610.91/20,401.95 = 7,754.97/x
  3. Step 3: Cross multiply
    13,610.91x = 20,401.95 × 7,754.97
  4. Step 4: Simplify right side
    13,610.91x = 158,216,510.19
  5. Step 5: Solve for x
    x = 158,216,510.19/13,610.91
  6. Step 6: Final answer
    x = 11,624.24

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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.