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Finding the Fourth Proportional to 17,979.94, 26,970.13 and 6,887.29

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Solution

The fourth proportional to 17,979.94, 26,970.13 and 6,887.29 is: 10,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,979.94 : 26,970.13 = 6,887.29 : x
  2. Step 2: Convert to fraction form
    17,979.94/26,970.13 = 6,887.29/x
  3. Step 3: Cross multiply
    17,979.94x = 26,970.13 × 6,887.29
  4. Step 4: Simplify right side
    17,979.94x = 185,751,106.65
  5. Step 5: Solve for x
    x = 185,751,106.65/17,979.94
  6. Step 6: Final answer
    x = 10,331.02

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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.