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Finding the Fourth Proportional to 9,993.03, 13,790.40 and 5,516.78

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Solution

The fourth proportional to 9,993.03, 13,790.40 and 5,516.78 is: 7,613.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993.03 : 13,790.40 = 5,516.78 : x
  2. Step 2: Convert to fraction form
    9,993.03/13,790.40 = 5,516.78/x
  3. Step 3: Cross multiply
    9,993.03x = 13,790.40 × 5,516.78
  4. Step 4: Simplify right side
    9,993.03x = 76,078,602.91
  5. Step 5: Solve for x
    x = 76,078,602.91/9,993.03
  6. Step 6: Final answer
    x = 7,613.17

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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.