Home / 14,290.30-21,426.82-6,388.54

Finding the Fourth Proportional to 14,290.30, 21,426.82 and 6,388.54

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Solution

The fourth proportional to 14,290.30, 21,426.82 and 6,388.54 is: 9,578.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.30 : 21,426.82 = 6,388.54 : x
  2. Step 2: Convert to fraction form
    14,290.30/21,426.82 = 6,388.54/x
  3. Step 3: Cross multiply
    14,290.30x = 21,426.82 × 6,388.54
  4. Step 4: Simplify right side
    14,290.30x = 136,886,096.64
  5. Step 5: Solve for x
    x = 136,886,096.64/14,290.30
  6. Step 6: Final answer
    x = 9,578.95

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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.