Home / 12,112.93-18,161.52-5,785.21

Finding the Fourth Proportional to 12,112.93, 18,161.52 and 5,785.21

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Solution

The fourth proportional to 12,112.93, 18,161.52 and 5,785.21 is: 8,674.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.93 : 18,161.52 = 5,785.21 : x
  2. Step 2: Convert to fraction form
    12,112.93/18,161.52 = 5,785.21/x
  3. Step 3: Cross multiply
    12,112.93x = 18,161.52 × 5,785.21
  4. Step 4: Simplify right side
    12,112.93x = 105,068,207.12
  5. Step 5: Solve for x
    x = 105,068,207.12/12,112.93
  6. Step 6: Final answer
    x = 8,674.05

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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.