Home / 13,654.36-20,520.10-8,108.76

Finding the Fourth Proportional to 13,654.36, 20,520.10 and 8,108.76

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Solution

The fourth proportional to 13,654.36, 20,520.10 and 8,108.76 is: 12,186.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.36 : 20,520.10 = 8,108.76 : x
  2. Step 2: Convert to fraction form
    13,654.36/20,520.10 = 8,108.76/x
  3. Step 3: Cross multiply
    13,654.36x = 20,520.10 × 8,108.76
  4. Step 4: Simplify right side
    13,654.36x = 166,392,566.08
  5. Step 5: Solve for x
    x = 166,392,566.08/13,654.36
  6. Step 6: Final answer
    x = 12,186.04

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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.