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Finding the Fourth Proportional to 35,993.32, 53,990.34 and 12,620.32

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Solution

The fourth proportional to 35,993.32, 53,990.34 and 12,620.32 is: 18,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,993.32 : 53,990.34 = 12,620.32 : x
  2. Step 2: Convert to fraction form
    35,993.32/53,990.34 = 12,620.32/x
  3. Step 3: Cross multiply
    35,993.32x = 53,990.34 × 12,620.32
  4. Step 4: Simplify right side
    35,993.32x = 681,375,367.71
  5. Step 5: Solve for x
    x = 681,375,367.71/35,993.32
  6. Step 6: Final answer
    x = 18,930.61

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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.