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Finding the Fourth Proportional to 9,353.07, 12,910.59 and 8,021.43

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Solution

The fourth proportional to 9,353.07, 12,910.59 and 8,021.43 is: 11,072.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,353.07 : 12,910.59 = 8,021.43 : x
  2. Step 2: Convert to fraction form
    9,353.07/12,910.59 = 8,021.43/x
  3. Step 3: Cross multiply
    9,353.07x = 12,910.59 × 8,021.43
  4. Step 4: Simplify right side
    9,353.07x = 103,561,393.94
  5. Step 5: Solve for x
    x = 103,561,393.94/9,353.07
  6. Step 6: Final answer
    x = 11,072.45

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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.