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Finding the Fourth Proportional to 13,658.24, 20,487.24 and 4,424.24

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Solution

The fourth proportional to 13,658.24, 20,487.24 and 4,424.24 is: 6,636.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658.24 : 20,487.24 = 4,424.24 : x
  2. Step 2: Convert to fraction form
    13,658.24/20,487.24 = 4,424.24/x
  3. Step 3: Cross multiply
    13,658.24x = 20,487.24 × 4,424.24
  4. Step 4: Simplify right side
    13,658.24x = 90,640,466.70
  5. Step 5: Solve for x
    x = 90,640,466.70/13,658.24
  6. Step 6: Final answer
    x = 6,636.32

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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.