Home / 12,918.24-17,827.68-7,612.80

Finding the Fourth Proportional to 12,918.24, 17,827.68 and 7,612.80

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Solution

The fourth proportional to 12,918.24, 17,827.68 and 7,612.80 is: 10,505.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.24 : 17,827.68 = 7,612.80 : x
  2. Step 2: Convert to fraction form
    12,918.24/17,827.68 = 7,612.80/x
  3. Step 3: Cross multiply
    12,918.24x = 17,827.68 × 7,612.80
  4. Step 4: Simplify right side
    12,918.24x = 135,718,562.30
  5. Step 5: Solve for x
    x = 135,718,562.30/12,918.24
  6. Step 6: Final answer
    x = 10,505.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.