Home / 14,775.22-20,388.97-8,400.91

Finding the Fourth Proportional to 14,775.22, 20,388.97 and 8,400.91

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Solution

The fourth proportional to 14,775.22, 20,388.97 and 8,400.91 is: 11,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.22 : 20,388.97 = 8,400.91 : x
  2. Step 2: Convert to fraction form
    14,775.22/20,388.97 = 8,400.91/x
  3. Step 3: Cross multiply
    14,775.22x = 20,388.97 × 8,400.91
  4. Step 4: Simplify right side
    14,775.22x = 171,285,901.96
  5. Step 5: Solve for x
    x = 171,285,901.96/14,775.22
  6. Step 6: Final answer
    x = 11,592.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.