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Finding the Fourth Proportional to 37,309.88, 51,487.68 and 20,542.88

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Solution

The fourth proportional to 37,309.88, 51,487.68 and 20,542.88 is: 28,349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,309.88 : 51,487.68 = 20,542.88 : x
  2. Step 2: Convert to fraction form
    37,309.88/51,487.68 = 20,542.88/x
  3. Step 3: Cross multiply
    37,309.88x = 51,487.68 × 20,542.88
  4. Step 4: Simplify right side
    37,309.88x = 1,057,705,231.72
  5. Step 5: Solve for x
    x = 1,057,705,231.72/37,309.88
  6. Step 6: Final answer
    x = 28,349.20

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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.