Home / 13,106.50-19,663.08-3,872.50

Finding the Fourth Proportional to 13,106.50, 19,663.08 and 3,872.50

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Solution

The fourth proportional to 13,106.50, 19,663.08 and 3,872.50 is: 5,809.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.50 : 19,663.08 = 3,872.50 : x
  2. Step 2: Convert to fraction form
    13,106.50/19,663.08 = 3,872.50/x
  3. Step 3: Cross multiply
    13,106.50x = 19,663.08 × 3,872.50
  4. Step 4: Simplify right side
    13,106.50x = 76,145,277.30
  5. Step 5: Solve for x
    x = 76,145,277.30/13,106.50
  6. Step 6: Final answer
    x = 5,809.73

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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.