Home / 13,426.45-20,139.54-8,162.92

Finding the Fourth Proportional to 13,426.45, 20,139.54 and 8,162.92

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Solution

The fourth proportional to 13,426.45, 20,139.54 and 8,162.92 is: 12,244.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.45 : 20,139.54 = 8,162.92 : x
  2. Step 2: Convert to fraction form
    13,426.45/20,139.54 = 8,162.92/x
  3. Step 3: Cross multiply
    13,426.45x = 20,139.54 × 8,162.92
  4. Step 4: Simplify right side
    13,426.45x = 164,397,453.86
  5. Step 5: Solve for x
    x = 164,397,453.86/13,426.45
  6. Step 6: Final answer
    x = 12,244.30

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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.