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Finding the Fourth Proportional to 37,661.76, 51,974.20 and 20,666.74

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Solution

The fourth proportional to 37,661.76, 51,974.20 and 20,666.74 is: 28,520.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,661.76 : 51,974.20 = 20,666.74 : x
  2. Step 2: Convert to fraction form
    37,661.76/51,974.20 = 20,666.74/x
  3. Step 3: Cross multiply
    37,661.76x = 51,974.20 × 20,666.74
  4. Step 4: Simplify right side
    37,661.76x = 1,074,137,278.11
  5. Step 5: Solve for x
    x = 1,074,137,278.11/37,661.76
  6. Step 6: Final answer
    x = 28,520.63

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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.