Home / 13,626.16-20,434.92-4,390

Finding the Fourth Proportional to 13,626.16, 20,434.92 and 4,390

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Solution

The fourth proportional to 13,626.16, 20,434.92 and 4,390 is: 6,583.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.16 : 20,434.92 = 4,390 : x
  2. Step 2: Convert to fraction form
    13,626.16/20,434.92 = 4,390/x
  3. Step 3: Cross multiply
    13,626.16x = 20,434.92 × 4,390
  4. Step 4: Simplify right side
    13,626.16x = 89,709,298.80
  5. Step 5: Solve for x
    x = 89,709,298.80/13,626.16
  6. Step 6: Final answer
    x = 6,583.61

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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.