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Finding the Fourth Proportional to 12,963.06, 17,889.96 and 7,374.06

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Solution

The fourth proportional to 12,963.06, 17,889.96 and 7,374.06 is: 10,176.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,963.06 : 17,889.96 = 7,374.06 : x
  2. Step 2: Convert to fraction form
    12,963.06/17,889.96 = 7,374.06/x
  3. Step 3: Cross multiply
    12,963.06x = 17,889.96 × 7,374.06
  4. Step 4: Simplify right side
    12,963.06x = 131,921,638.44
  5. Step 5: Solve for x
    x = 131,921,638.44/12,963.06
  6. Step 6: Final answer
    x = 10,176.74

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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.