Home / 13,989.41-20,990.34-7,414.03

Finding the Fourth Proportional to 13,989.41, 20,990.34 and 7,414.03

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Solution

The fourth proportional to 13,989.41, 20,990.34 and 7,414.03 is: 11,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.41 : 20,990.34 = 7,414.03 : x
  2. Step 2: Convert to fraction form
    13,989.41/20,990.34 = 7,414.03/x
  3. Step 3: Cross multiply
    13,989.41x = 20,990.34 × 7,414.03
  4. Step 4: Simplify right side
    13,989.41x = 155,623,036.71
  5. Step 5: Solve for x
    x = 155,623,036.71/13,989.41
  6. Step 6: Final answer
    x = 11,124.35

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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.