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Finding the Fourth Proportional to 37,672.68, 51,988.50 and 20,905.68

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Solution

The fourth proportional to 37,672.68, 51,988.50 and 20,905.68 is: 28,849.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,672.68 : 51,988.50 = 20,905.68 : x
  2. Step 2: Convert to fraction form
    37,672.68/51,988.50 = 20,905.68/x
  3. Step 3: Cross multiply
    37,672.68x = 51,988.50 × 20,905.68
  4. Step 4: Simplify right side
    37,672.68x = 1,086,854,944.68
  5. Step 5: Solve for x
    x = 1,086,854,944.68/37,672.68
  6. Step 6: Final answer
    x = 28,849.95

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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.