Home / 11,319.39-16,979.85-2,999.30

Finding the Fourth Proportional to 11,319.39, 16,979.85 and 2,999.30

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Solution

The fourth proportional to 11,319.39, 16,979.85 and 2,999.30 is: 4,499.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.39 : 16,979.85 = 2,999.30 : x
  2. Step 2: Convert to fraction form
    11,319.39/16,979.85 = 2,999.30/x
  3. Step 3: Cross multiply
    11,319.39x = 16,979.85 × 2,999.30
  4. Step 4: Simplify right side
    11,319.39x = 50,927,579.21
  5. Step 5: Solve for x
    x = 50,927,579.21/11,319.39
  6. Step 6: Final answer
    x = 4,499.15

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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.