Home / 13,522.16-20,285.40-4,286

Finding the Fourth Proportional to 13,522.16, 20,285.40 and 4,286

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Solution

The fourth proportional to 13,522.16, 20,285.40 and 4,286 is: 6,429.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,522.16 : 20,285.40 = 4,286 : x
  2. Step 2: Convert to fraction form
    13,522.16/20,285.40 = 4,286/x
  3. Step 3: Cross multiply
    13,522.16x = 20,285.40 × 4,286
  4. Step 4: Simplify right side
    13,522.16x = 86,943,224.40
  5. Step 5: Solve for x
    x = 86,943,224.40/13,522.16
  6. Step 6: Final answer
    x = 6,429.68

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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.