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Finding the Fourth Proportional to 13,484.17, 18,608.79 and 7,515.88

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Solution

The fourth proportional to 13,484.17, 18,608.79 and 7,515.88 is: 10,372.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.17 : 18,608.79 = 7,515.88 : x
  2. Step 2: Convert to fraction form
    13,484.17/18,608.79 = 7,515.88/x
  3. Step 3: Cross multiply
    13,484.17x = 18,608.79 × 7,515.88
  4. Step 4: Simplify right side
    13,484.17x = 139,861,367.27
  5. Step 5: Solve for x
    x = 139,861,367.27/13,484.17
  6. Step 6: Final answer
    x = 10,372.27

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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.