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Finding the Fourth Proportional to 13,491.53, 18,617.43 and 7,522.85

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Solution

The fourth proportional to 13,491.53, 18,617.43 and 7,522.85 is: 10,381.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.53 : 18,617.43 = 7,522.85 : x
  2. Step 2: Convert to fraction form
    13,491.53/18,617.43 = 7,522.85/x
  3. Step 3: Cross multiply
    13,491.53x = 18,617.43 × 7,522.85
  4. Step 4: Simplify right side
    13,491.53x = 140,056,040.19
  5. Step 5: Solve for x
    x = 140,056,040.19/13,491.53
  6. Step 6: Final answer
    x = 10,381.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.