Home / 11,979.09-17,977.95-7,818.03

Finding the Fourth Proportional to 11,979.09, 17,977.95 and 7,818.03

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Solution

The fourth proportional to 11,979.09, 17,977.95 and 7,818.03 is: 11,733.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.09 : 17,977.95 = 7,818.03 : x
  2. Step 2: Convert to fraction form
    11,979.09/17,977.95 = 7,818.03/x
  3. Step 3: Cross multiply
    11,979.09x = 17,977.95 × 7,818.03
  4. Step 4: Simplify right side
    11,979.09x = 140,552,152.44
  5. Step 5: Solve for x
    x = 140,552,152.44/11,979.09
  6. Step 6: Final answer
    x = 11,733.12

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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.