Home / 12,345.44-18,521.19-3,580.22

Finding the Fourth Proportional to 12,345.44, 18,521.19 and 3,580.22

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Solution

The fourth proportional to 12,345.44, 18,521.19 and 3,580.22 is: 5,371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.44 : 18,521.19 = 3,580.22 : x
  2. Step 2: Convert to fraction form
    12,345.44/18,521.19 = 3,580.22/x
  3. Step 3: Cross multiply
    12,345.44x = 18,521.19 × 3,580.22
  4. Step 4: Simplify right side
    12,345.44x = 66,309,981.16
  5. Step 5: Solve for x
    x = 66,309,981.16/12,345.44
  6. Step 6: Final answer
    x = 5,371.21

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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.