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Finding the Fourth Proportional to 13,484.66, 18,609.41 and 7,516.32

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Solution

The fourth proportional to 13,484.66, 18,609.41 and 7,516.32 is: 10,372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.66 : 18,609.41 = 7,516.32 : x
  2. Step 2: Convert to fraction form
    13,484.66/18,609.41 = 7,516.32/x
  3. Step 3: Cross multiply
    13,484.66x = 18,609.41 × 7,516.32
  4. Step 4: Simplify right side
    13,484.66x = 139,874,242.99
  5. Step 5: Solve for x
    x = 139,874,242.99/13,484.66
  6. Step 6: Final answer
    x = 10,372.85

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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.