Home / 13,656.45-20,481.03-8,424.08

Finding the Fourth Proportional to 13,656.45, 20,481.03 and 8,424.08

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Solution

The fourth proportional to 13,656.45, 20,481.03 and 8,424.08 is: 12,633.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.45 : 20,481.03 = 8,424.08 : x
  2. Step 2: Convert to fraction form
    13,656.45/20,481.03 = 8,424.08/x
  3. Step 3: Cross multiply
    13,656.45x = 20,481.03 × 8,424.08
  4. Step 4: Simplify right side
    13,656.45x = 172,533,835.20
  5. Step 5: Solve for x
    x = 172,533,835.20/13,656.45
  6. Step 6: Final answer
    x = 12,633.87

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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.