Home / 12,390.18-18,571.23-6,154.53

Finding the Fourth Proportional to 12,390.18, 18,571.23 and 6,154.53

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Solution

The fourth proportional to 12,390.18, 18,571.23 and 6,154.53 is: 9,224.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.18 : 18,571.23 = 6,154.53 : x
  2. Step 2: Convert to fraction form
    12,390.18/18,571.23 = 6,154.53/x
  3. Step 3: Cross multiply
    12,390.18x = 18,571.23 × 6,154.53
  4. Step 4: Simplify right side
    12,390.18x = 114,297,192.17
  5. Step 5: Solve for x
    x = 114,297,192.17/12,390.18
  6. Step 6: Final answer
    x = 9,224.82

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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.