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Finding the Fourth Proportional to 33,615.30, 50,422.98 and 8,655.40

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Solution

The fourth proportional to 33,615.30, 50,422.98 and 8,655.40 is: 12,983.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,615.30 : 50,422.98 = 8,655.40 : x
  2. Step 2: Convert to fraction form
    33,615.30/50,422.98 = 8,655.40/x
  3. Step 3: Cross multiply
    33,615.30x = 50,422.98 × 8,655.40
  4. Step 4: Simplify right side
    33,615.30x = 436,431,061.09
  5. Step 5: Solve for x
    x = 436,431,061.09/33,615.30
  6. Step 6: Final answer
    x = 12,983.11

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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.