Home / 13,209.86-19,817.38-4,889.95

Finding the Fourth Proportional to 13,209.86, 19,817.38 and 4,889.95

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Solution

The fourth proportional to 13,209.86, 19,817.38 and 4,889.95 is: 7,335.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.86 : 19,817.38 = 4,889.95 : x
  2. Step 2: Convert to fraction form
    13,209.86/19,817.38 = 4,889.95/x
  3. Step 3: Cross multiply
    13,209.86x = 19,817.38 × 4,889.95
  4. Step 4: Simplify right side
    13,209.86x = 96,905,997.33
  5. Step 5: Solve for x
    x = 96,905,997.33/13,209.86
  6. Step 6: Final answer
    x = 7,335.88

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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.