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Finding the Fourth Proportional to 12,619.24, 18,908.10 and 7,673.99

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Solution

The fourth proportional to 12,619.24, 18,908.10 and 7,673.99 is: 11,498.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.24 : 18,908.10 = 7,673.99 : x
  2. Step 2: Convert to fraction form
    12,619.24/18,908.10 = 7,673.99/x
  3. Step 3: Cross multiply
    12,619.24x = 18,908.10 × 7,673.99
  4. Step 4: Simplify right side
    12,619.24x = 145,100,475.78
  5. Step 5: Solve for x
    x = 145,100,475.78/12,619.24
  6. Step 6: Final answer
    x = 11,498.36

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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.