Home / 12,649.20-18,977.64-5,723.76

Finding the Fourth Proportional to 12,649.20, 18,977.64 and 5,723.76

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Solution

The fourth proportional to 12,649.20, 18,977.64 and 5,723.76 is: 8,587.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,649.20 : 18,977.64 = 5,723.76 : x
  2. Step 2: Convert to fraction form
    12,649.20/18,977.64 = 5,723.76/x
  3. Step 3: Cross multiply
    12,649.20x = 18,977.64 × 5,723.76
  4. Step 4: Simplify right side
    12,649.20x = 108,623,456.73
  5. Step 5: Solve for x
    x = 108,623,456.73/12,649.20
  6. Step 6: Final answer
    x = 8,587.38

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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.