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Finding the Fourth Proportional to 12,926.31, 17,840.25 and 7,893.45

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Solution

The fourth proportional to 12,926.31, 17,840.25 and 7,893.45 is: 10,894.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,926.31 : 17,840.25 = 7,893.45 : x
  2. Step 2: Convert to fraction form
    12,926.31/17,840.25 = 7,893.45/x
  3. Step 3: Cross multiply
    12,926.31x = 17,840.25 × 7,893.45
  4. Step 4: Simplify right side
    12,926.31x = 140,821,121.36
  5. Step 5: Solve for x
    x = 140,821,121.36/12,926.31
  6. Step 6: Final answer
    x = 10,894.15

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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.