Home / 11,129.62-15,362.04-6,881.98

Finding the Fourth Proportional to 11,129.62, 15,362.04 and 6,881.98

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Solution

The fourth proportional to 11,129.62, 15,362.04 and 6,881.98 is: 9,499.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.62 : 15,362.04 = 6,881.98 : x
  2. Step 2: Convert to fraction form
    11,129.62/15,362.04 = 6,881.98/x
  3. Step 3: Cross multiply
    11,129.62x = 15,362.04 × 6,881.98
  4. Step 4: Simplify right side
    11,129.62x = 105,721,252.04
  5. Step 5: Solve for x
    x = 105,721,252.04/11,129.62
  6. Step 6: Final answer
    x = 9,499.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.