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Finding the Fourth Proportional to 37,621.30, 56,440.60 and 12,660.68

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Solution

The fourth proportional to 37,621.30, 56,440.60 and 12,660.68 is: 18,993.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,621.30 : 56,440.60 = 12,660.68 : x
  2. Step 2: Convert to fraction form
    37,621.30/56,440.60 = 12,660.68/x
  3. Step 3: Cross multiply
    37,621.30x = 56,440.60 × 12,660.68
  4. Step 4: Simplify right side
    37,621.30x = 714,576,375.61
  5. Step 5: Solve for x
    x = 714,576,375.61/37,621.30
  6. Step 6: Final answer
    x = 18,993.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.