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Finding the Fourth Proportional to 13,287.78, 19,894.76 and 6,693.97

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Solution

The fourth proportional to 13,287.78, 19,894.76 and 6,693.97 is: 10,022.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.78 : 19,894.76 = 6,693.97 : x
  2. Step 2: Convert to fraction form
    13,287.78/19,894.76 = 6,693.97/x
  3. Step 3: Cross multiply
    13,287.78x = 19,894.76 × 6,693.97
  4. Step 4: Simplify right side
    13,287.78x = 133,174,893.13
  5. Step 5: Solve for x
    x = 133,174,893.13/13,287.78
  6. Step 6: Final answer
    x = 10,022.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.