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Finding the Fourth Proportional to 12,606.86, 18,910.28 and 4,709.99

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Solution

The fourth proportional to 12,606.86, 18,910.28 and 4,709.99 is: 7,064.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.86 : 18,910.28 = 4,709.99 : x
  2. Step 2: Convert to fraction form
    12,606.86/18,910.28 = 4,709.99/x
  3. Step 3: Cross multiply
    12,606.86x = 18,910.28 × 4,709.99
  4. Step 4: Simplify right side
    12,606.86x = 89,067,111.60
  5. Step 5: Solve for x
    x = 89,067,111.60/12,606.86
  6. Step 6: Final answer
    x = 7,064.97

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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.