Home / 18,612.24-27,910.80-12,080.40

Finding the Fourth Proportional to 18,612.24, 27,910.80 and 12,080.40

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Solution

The fourth proportional to 18,612.24, 27,910.80 and 12,080.40 is: 18,115.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.24 : 27,910.80 = 12,080.40 : x
  2. Step 2: Convert to fraction form
    18,612.24/27,910.80 = 12,080.40/x
  3. Step 3: Cross multiply
    18,612.24x = 27,910.80 × 12,080.40
  4. Step 4: Simplify right side
    18,612.24x = 337,173,628.32
  5. Step 5: Solve for x
    x = 337,173,628.32/18,612.24
  6. Step 6: Final answer
    x = 18,115.69

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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.