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Finding the Fourth Proportional to 32,857.70, 49,286.55 and 18,812.30

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Solution

The fourth proportional to 32,857.70, 49,286.55 and 18,812.30 is: 28,218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,857.70 : 49,286.55 = 18,812.30 : x
  2. Step 2: Convert to fraction form
    32,857.70/49,286.55 = 18,812.30/x
  3. Step 3: Cross multiply
    32,857.70x = 49,286.55 × 18,812.30
  4. Step 4: Simplify right side
    32,857.70x = 927,193,364.57
  5. Step 5: Solve for x
    x = 927,193,364.57/32,857.70
  6. Step 6: Final answer
    x = 28,218.45

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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.