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Finding the Fourth Proportional to 13,756.70, 20,635.06 and 7,513.30

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Solution

The fourth proportional to 13,756.70, 20,635.06 and 7,513.30 is: 11,269.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.70 : 20,635.06 = 7,513.30 : x
  2. Step 2: Convert to fraction form
    13,756.70/20,635.06 = 7,513.30/x
  3. Step 3: Cross multiply
    13,756.70x = 20,635.06 × 7,513.30
  4. Step 4: Simplify right side
    13,756.70x = 155,037,396.30
  5. Step 5: Solve for x
    x = 155,037,396.30/13,756.70
  6. Step 6: Final answer
    x = 11,269.96

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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.