Home / 12,317.64-18,479.17-3,998.50

Finding the Fourth Proportional to 12,317.64, 18,479.17 and 3,998.50

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Solution

The fourth proportional to 12,317.64, 18,479.17 and 3,998.50 is: 5,998.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,317.64 : 18,479.17 = 3,998.50 : x
  2. Step 2: Convert to fraction form
    12,317.64/18,479.17 = 3,998.50/x
  3. Step 3: Cross multiply
    12,317.64x = 18,479.17 × 3,998.50
  4. Step 4: Simplify right side
    12,317.64x = 73,888,905.05
  5. Step 5: Solve for x
    x = 73,888,905.05/12,317.64
  6. Step 6: Final answer
    x = 5,998.62

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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.