Home / 13,520.10-20,282.45-4,159.91

Finding the Fourth Proportional to 13,520.10, 20,282.45 and 4,159.91

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Solution

The fourth proportional to 13,520.10, 20,282.45 and 4,159.91 is: 6,240.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.10 : 20,282.45 = 4,159.91 : x
  2. Step 2: Convert to fraction form
    13,520.10/20,282.45 = 4,159.91/x
  3. Step 3: Cross multiply
    13,520.10x = 20,282.45 × 4,159.91
  4. Step 4: Simplify right side
    13,520.10x = 84,373,105.80
  5. Step 5: Solve for x
    x = 84,373,105.80/13,520.10
  6. Step 6: Final answer
    x = 6,240.57

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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.