Home / 19,991.84-29,998.14-8,154.30

Finding the Fourth Proportional to 19,991.84, 29,998.14 and 8,154.30

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Solution

The fourth proportional to 19,991.84, 29,998.14 and 8,154.30 is: 12,235.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.84 : 29,998.14 = 8,154.30 : x
  2. Step 2: Convert to fraction form
    19,991.84/29,998.14 = 8,154.30/x
  3. Step 3: Cross multiply
    19,991.84x = 29,998.14 × 8,154.30
  4. Step 4: Simplify right side
    19,991.84x = 244,613,833.00
  5. Step 5: Solve for x
    x = 244,613,833.00/19,991.84
  6. Step 6: Final answer
    x = 12,235.68

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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.