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Finding the Fourth Proportional to 12,618.06, 18,918.99 and 5,600.22

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Solution

The fourth proportional to 12,618.06, 18,918.99 and 5,600.22 is: 8,396.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.06 : 18,918.99 = 5,600.22 : x
  2. Step 2: Convert to fraction form
    12,618.06/18,918.99 = 5,600.22/x
  3. Step 3: Cross multiply
    12,618.06x = 18,918.99 × 5,600.22
  4. Step 4: Simplify right side
    12,618.06x = 105,950,506.18
  5. Step 5: Solve for x
    x = 105,950,506.18/12,618.06
  6. Step 6: Final answer
    x = 8,396.74

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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.