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Finding the Fourth Proportional to 12,399.54, 17,110.32 and 6,810.54

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Solution

The fourth proportional to 12,399.54, 17,110.32 and 6,810.54 is: 9,397.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.54 : 17,110.32 = 6,810.54 : x
  2. Step 2: Convert to fraction form
    12,399.54/17,110.32 = 6,810.54/x
  3. Step 3: Cross multiply
    12,399.54x = 17,110.32 × 6,810.54
  4. Step 4: Simplify right side
    12,399.54x = 116,530,518.77
  5. Step 5: Solve for x
    x = 116,530,518.77/12,399.54
  6. Step 6: Final answer
    x = 9,397.97

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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.