Home / 20,238.08-30,363.85-8,991.86

Finding the Fourth Proportional to 20,238.08, 30,363.85 and 8,991.86

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Solution

The fourth proportional to 20,238.08, 30,363.85 and 8,991.86 is: 13,490.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.08 : 30,363.85 = 8,991.86 : x
  2. Step 2: Convert to fraction form
    20,238.08/30,363.85 = 8,991.86/x
  3. Step 3: Cross multiply
    20,238.08x = 30,363.85 × 8,991.86
  4. Step 4: Simplify right side
    20,238.08x = 273,027,410.97
  5. Step 5: Solve for x
    x = 273,027,410.97/20,238.08
  6. Step 6: Final answer
    x = 13,490.77

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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.