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Finding the Fourth Proportional to 27,689.99, 38,253.87 and 18,152.54

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Solution

The fourth proportional to 27,689.99, 38,253.87 and 18,152.54 is: 25,077.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,689.99 : 38,253.87 = 18,152.54 : x
  2. Step 2: Convert to fraction form
    27,689.99/38,253.87 = 18,152.54/x
  3. Step 3: Cross multiply
    27,689.99x = 38,253.87 × 18,152.54
  4. Step 4: Simplify right side
    27,689.99x = 694,404,857.51
  5. Step 5: Solve for x
    x = 694,404,857.51/27,689.99
  6. Step 6: Final answer
    x = 25,077.83

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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.