Home / 12,240.55-18,363.18-5,220.43

Finding the Fourth Proportional to 12,240.55, 18,363.18 and 5,220.43

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Solution

The fourth proportional to 12,240.55, 18,363.18 and 5,220.43 is: 7,831.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.55 : 18,363.18 = 5,220.43 : x
  2. Step 2: Convert to fraction form
    12,240.55/18,363.18 = 5,220.43/x
  3. Step 3: Cross multiply
    12,240.55x = 18,363.18 × 5,220.43
  4. Step 4: Simplify right side
    12,240.55x = 95,863,695.77
  5. Step 5: Solve for x
    x = 95,863,695.77/12,240.55
  6. Step 6: Final answer
    x = 7,831.65

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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.