Home / 13,553.85-20,336.81-8,622.21

Finding the Fourth Proportional to 13,553.85, 20,336.81 and 8,622.21

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Solution

The fourth proportional to 13,553.85, 20,336.81 and 8,622.21 is: 12,937.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.85 : 20,336.81 = 8,622.21 : x
  2. Step 2: Convert to fraction form
    13,553.85/20,336.81 = 8,622.21/x
  3. Step 3: Cross multiply
    13,553.85x = 20,336.81 × 8,622.21
  4. Step 4: Simplify right side
    13,553.85x = 175,348,246.55
  5. Step 5: Solve for x
    x = 175,348,246.55/13,553.85
  6. Step 6: Final answer
    x = 12,937.15

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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.