Home / 13,380.69-20,061.11-8,116.91

Finding the Fourth Proportional to 13,380.69, 20,061.11 and 8,116.91

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Solution

The fourth proportional to 13,380.69, 20,061.11 and 8,116.91 is: 12,169.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.69 : 20,061.11 = 8,116.91 : x
  2. Step 2: Convert to fraction form
    13,380.69/20,061.11 = 8,116.91/x
  3. Step 3: Cross multiply
    13,380.69x = 20,061.11 × 8,116.91
  4. Step 4: Simplify right side
    13,380.69x = 162,834,124.06
  5. Step 5: Solve for x
    x = 162,834,124.06/13,380.69
  6. Step 6: Final answer
    x = 12,169.34

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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.