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Finding the Fourth Proportional to 27,841.74, 41,687.28 and 20,389.74

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Solution

The fourth proportional to 27,841.74, 41,687.28 and 20,389.74 is: 30,529.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,841.74 : 41,687.28 = 20,389.74 : x
  2. Step 2: Convert to fraction form
    27,841.74/41,687.28 = 20,389.74/x
  3. Step 3: Cross multiply
    27,841.74x = 41,687.28 × 20,389.74
  4. Step 4: Simplify right side
    27,841.74x = 849,992,800.51
  5. Step 5: Solve for x
    x = 849,992,800.51/27,841.74
  6. Step 6: Final answer
    x = 30,529.44

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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.