Home / 17,979.06-26,977.71-12,123.39

Finding the Fourth Proportional to 17,979.06, 26,977.71 and 12,123.39

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Solution

The fourth proportional to 17,979.06, 26,977.71 and 12,123.39 is: 18,191.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,979.06 : 26,977.71 = 12,123.39 : x
  2. Step 2: Convert to fraction form
    17,979.06/26,977.71 = 12,123.39/x
  3. Step 3: Cross multiply
    17,979.06x = 26,977.71 × 12,123.39
  4. Step 4: Simplify right side
    17,979.06x = 327,061,299.64
  5. Step 5: Solve for x
    x = 327,061,299.64/17,979.06
  6. Step 6: Final answer
    x = 18,191.23

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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.