Home / 13,396.29-20,035.31-8,116.71

Finding the Fourth Proportional to 13,396.29, 20,035.31 and 8,116.71

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Solution

The fourth proportional to 13,396.29, 20,035.31 and 8,116.71 is: 12,139.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.29 : 20,035.31 = 8,116.71 : x
  2. Step 2: Convert to fraction form
    13,396.29/20,035.31 = 8,116.71/x
  3. Step 3: Cross multiply
    13,396.29x = 20,035.31 × 8,116.71
  4. Step 4: Simplify right side
    13,396.29x = 162,620,760.45
  5. Step 5: Solve for x
    x = 162,620,760.45/13,396.29
  6. Step 6: Final answer
    x = 12,139.24

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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.