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Finding the Fourth Proportional to 37,663.90, 51,976.17 and 20,896.90

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Solution

The fourth proportional to 37,663.90, 51,976.17 and 20,896.90 is: 28,837.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,663.90 : 51,976.17 = 20,896.90 : x
  2. Step 2: Convert to fraction form
    37,663.90/51,976.17 = 20,896.90/x
  3. Step 3: Cross multiply
    37,663.90x = 51,976.17 × 20,896.90
  4. Step 4: Simplify right side
    37,663.90x = 1,086,140,826.87
  5. Step 5: Solve for x
    x = 1,086,140,826.87/37,663.90
  6. Step 6: Final answer
    x = 28,837.72

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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.