Home / 10,221.45-14,108.09-6,245.91

Finding the Fourth Proportional to 10,221.45, 14,108.09 and 6,245.91

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Solution

The fourth proportional to 10,221.45, 14,108.09 and 6,245.91 is: 8,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.45 : 14,108.09 = 6,245.91 : x
  2. Step 2: Convert to fraction form
    10,221.45/14,108.09 = 6,245.91/x
  3. Step 3: Cross multiply
    10,221.45x = 14,108.09 × 6,245.91
  4. Step 4: Simplify right side
    10,221.45x = 88,117,829.18
  5. Step 5: Solve for x
    x = 88,117,829.18/10,221.45
  6. Step 6: Final answer
    x = 8,620.87

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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.