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Finding the Fourth Proportional to 13,537.60, 20,306.40 and 5,745.40

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Solution

The fourth proportional to 13,537.60, 20,306.40 and 5,745.40 is: 8,618.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,537.60 : 20,306.40 = 5,745.40 : x
  2. Step 2: Convert to fraction form
    13,537.60/20,306.40 = 5,745.40/x
  3. Step 3: Cross multiply
    13,537.60x = 20,306.40 × 5,745.40
  4. Step 4: Simplify right side
    13,537.60x = 116,668,390.56
  5. Step 5: Solve for x
    x = 116,668,390.56/13,537.60
  6. Step 6: Final answer
    x = 8,618.10

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1.5x scale

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.