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Finding the Fourth Proportional to 33,389.70, 50,079.08 and 12,339.60

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Solution

The fourth proportional to 33,389.70, 50,079.08 and 12,339.60 is: 18,507.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,389.70 : 50,079.08 = 12,339.60 : x
  2. Step 2: Convert to fraction form
    33,389.70/50,079.08 = 12,339.60/x
  3. Step 3: Cross multiply
    33,389.70x = 50,079.08 × 12,339.60
  4. Step 4: Simplify right side
    33,389.70x = 617,955,753.87
  5. Step 5: Solve for x
    x = 617,955,753.87/33,389.70
  6. Step 6: Final answer
    x = 18,507.38

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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.