Home / 26,984.11-40,485.13-11,989.15

Finding the Fourth Proportional to 26,984.11, 40,485.13 and 11,989.15

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Solution

The fourth proportional to 26,984.11, 40,485.13 and 11,989.15 is: 17,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,984.11 : 40,485.13 = 11,989.15 : x
  2. Step 2: Convert to fraction form
    26,984.11/40,485.13 = 11,989.15/x
  3. Step 3: Cross multiply
    26,984.11x = 40,485.13 × 11,989.15
  4. Step 4: Simplify right side
    26,984.11x = 485,382,063.94
  5. Step 5: Solve for x
    x = 485,382,063.94/26,984.11
  6. Step 6: Final answer
    x = 17,987.70

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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.