Home / 12,390.24-18,571.32-6,154.59

Finding the Fourth Proportional to 12,390.24, 18,571.32 and 6,154.59

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Solution

The fourth proportional to 12,390.24, 18,571.32 and 6,154.59 is: 9,224.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.24 : 18,571.32 = 6,154.59 : x
  2. Step 2: Convert to fraction form
    12,390.24/18,571.32 = 6,154.59/x
  3. Step 3: Cross multiply
    12,390.24x = 18,571.32 × 6,154.59
  4. Step 4: Simplify right side
    12,390.24x = 114,298,860.36
  5. Step 5: Solve for x
    x = 114,298,860.36/12,390.24
  6. Step 6: Final answer
    x = 9,224.91

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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.