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Finding the Fourth Proportional to 27,310.50, 40,927.65 and 20,641.50

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Solution

The fourth proportional to 27,310.50, 40,927.65 and 20,641.50 is: 30,933.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,310.50 : 40,927.65 = 20,641.50 : x
  2. Step 2: Convert to fraction form
    27,310.50/40,927.65 = 20,641.50/x
  3. Step 3: Cross multiply
    27,310.50x = 40,927.65 × 20,641.50
  4. Step 4: Simplify right side
    27,310.50x = 844,808,087.48
  5. Step 5: Solve for x
    x = 844,808,087.48/27,310.50
  6. Step 6: Final answer
    x = 30,933.45

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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.