Home / 12,126.84-16,725.54-7,879.26

Finding the Fourth Proportional to 12,126.84, 16,725.54 and 7,879.26

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Solution

The fourth proportional to 12,126.84, 16,725.54 and 7,879.26 is: 10,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.84 : 16,725.54 = 7,879.26 : x
  2. Step 2: Convert to fraction form
    12,126.84/16,725.54 = 7,879.26/x
  3. Step 3: Cross multiply
    12,126.84x = 16,725.54 × 7,879.26
  4. Step 4: Simplify right side
    12,126.84x = 131,784,878.30
  5. Step 5: Solve for x
    x = 131,784,878.30/12,126.84
  6. Step 6: Final answer
    x = 10,867.21

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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.