Home / 19,685.68-29,540.83-7,998.90

Finding the Fourth Proportional to 19,685.68, 29,540.83 and 7,998.90

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Solution

The fourth proportional to 19,685.68, 29,540.83 and 7,998.90 is: 12,003.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,685.68 : 29,540.83 = 7,998.90 : x
  2. Step 2: Convert to fraction form
    19,685.68/29,540.83 = 7,998.90/x
  3. Step 3: Cross multiply
    19,685.68x = 29,540.83 × 7,998.90
  4. Step 4: Simplify right side
    19,685.68x = 236,294,172.98
  5. Step 5: Solve for x
    x = 236,294,172.98/19,685.68
  6. Step 6: Final answer
    x = 12,003.35

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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.