Home / 12,164.04-16,785.12-8,979.02

Finding the Fourth Proportional to 12,164.04, 16,785.12 and 8,979.02

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Solution

The fourth proportional to 12,164.04, 16,785.12 and 8,979.02 is: 12,390.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,164.04 : 16,785.12 = 8,979.02 : x
  2. Step 2: Convert to fraction form
    12,164.04/16,785.12 = 8,979.02/x
  3. Step 3: Cross multiply
    12,164.04x = 16,785.12 × 8,979.02
  4. Step 4: Simplify right side
    12,164.04x = 150,713,844.26
  5. Step 5: Solve for x
    x = 150,713,844.26/12,164.04
  6. Step 6: Final answer
    x = 12,390.11

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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.