Home / 19,840.68-29,761.18-7,994.60

Finding the Fourth Proportional to 19,840.68, 29,761.18 and 7,994.60

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Solution

The fourth proportional to 19,840.68, 29,761.18 and 7,994.60 is: 11,991.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.68 : 29,761.18 = 7,994.60 : x
  2. Step 2: Convert to fraction form
    19,840.68/29,761.18 = 7,994.60/x
  3. Step 3: Cross multiply
    19,840.68x = 29,761.18 × 7,994.60
  4. Step 4: Simplify right side
    19,840.68x = 237,928,729.63
  5. Step 5: Solve for x
    x = 237,928,729.63/19,840.68
  6. Step 6: Final answer
    x = 11,991.96

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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.