Home / 19,812.40-29,723.15-6,664.43

Finding the Fourth Proportional to 19,812.40, 29,723.15 and 6,664.43

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Solution

The fourth proportional to 19,812.40, 29,723.15 and 6,664.43 is: 9,998.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.40 : 29,723.15 = 6,664.43 : x
  2. Step 2: Convert to fraction form
    19,812.40/29,723.15 = 6,664.43/x
  3. Step 3: Cross multiply
    19,812.40x = 29,723.15 × 6,664.43
  4. Step 4: Simplify right side
    19,812.40x = 198,087,776.33
  5. Step 5: Solve for x
    x = 198,087,776.33/19,812.40
  6. Step 6: Final answer
    x = 9,998.17

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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.