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Finding the Fourth Proportional to 37,676.76, 51,994.06 and 20,909.76

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Solution

The fourth proportional to 37,676.76, 51,994.06 and 20,909.76 is: 28,855.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,676.76 : 51,994.06 = 20,909.76 : x
  2. Step 2: Convert to fraction form
    37,676.76/51,994.06 = 20,909.76/x
  3. Step 3: Cross multiply
    37,676.76x = 51,994.06 × 20,909.76
  4. Step 4: Simplify right side
    37,676.76x = 1,087,183,316.03
  5. Step 5: Solve for x
    x = 1,087,183,316.03/37,676.76
  6. Step 6: Final answer
    x = 28,855.54

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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.