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Finding the Fourth Proportional to 27,605.92, 38,057.89 and 18,639.22

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Solution

The fourth proportional to 27,605.92, 38,057.89 and 18,639.22 is: 25,696.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,605.92 : 38,057.89 = 18,639.22 : x
  2. Step 2: Convert to fraction form
    27,605.92/38,057.89 = 18,639.22/x
  3. Step 3: Cross multiply
    27,605.92x = 38,057.89 × 18,639.22
  4. Step 4: Simplify right side
    27,605.92x = 709,369,384.45
  5. Step 5: Solve for x
    x = 709,369,384.45/27,605.92
  6. Step 6: Final answer
    x = 25,696.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.