Home / 10,171.47-15,221.82-6,221.00

Finding the Fourth Proportional to 10,171.47, 15,221.82 and 6,221.00

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Solution

The fourth proportional to 10,171.47, 15,221.82 and 6,221.00 is: 9,309.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,171.47 : 15,221.82 = 6,221.00 : x
  2. Step 2: Convert to fraction form
    10,171.47/15,221.82 = 6,221.00/x
  3. Step 3: Cross multiply
    10,171.47x = 15,221.82 × 6,221.00
  4. Step 4: Simplify right side
    10,171.47x = 94,695,003.60
  5. Step 5: Solve for x
    x = 94,695,003.60/10,171.47
  6. Step 6: Final answer
    x = 9,309.86

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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.