Home / 12,015.12-16,579.73-6,979.21

Finding the Fourth Proportional to 12,015.12, 16,579.73 and 6,979.21

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Solution

The fourth proportional to 12,015.12, 16,579.73 and 6,979.21 is: 9,630.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.12 : 16,579.73 = 6,979.21 : x
  2. Step 2: Convert to fraction form
    12,015.12/16,579.73 = 6,979.21/x
  3. Step 3: Cross multiply
    12,015.12x = 16,579.73 × 6,979.21
  4. Step 4: Simplify right side
    12,015.12x = 115,713,393.41
  5. Step 5: Solve for x
    x = 115,713,393.41/12,015.12
  6. Step 6: Final answer
    x = 9,630.65

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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.