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Finding the Fourth Proportional to 12,975.43, 17,906.15 and 7,310.26

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Solution

The fourth proportional to 12,975.43, 17,906.15 and 7,310.26 is: 10,088.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.43 : 17,906.15 = 7,310.26 : x
  2. Step 2: Convert to fraction form
    12,975.43/17,906.15 = 7,310.26/x
  3. Step 3: Cross multiply
    12,975.43x = 17,906.15 × 7,310.26
  4. Step 4: Simplify right side
    12,975.43x = 130,898,616.20
  5. Step 5: Solve for x
    x = 130,898,616.20/12,975.43
  6. Step 6: Final answer
    x = 10,088.19

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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.