Home / 13,935.66-19,231.08-7,647.90

Finding the Fourth Proportional to 13,935.66, 19,231.08 and 7,647.90

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Solution

The fourth proportional to 13,935.66, 19,231.08 and 7,647.90 is: 10,554.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.66 : 19,231.08 = 7,647.90 : x
  2. Step 2: Convert to fraction form
    13,935.66/19,231.08 = 7,647.90/x
  3. Step 3: Cross multiply
    13,935.66x = 19,231.08 × 7,647.90
  4. Step 4: Simplify right side
    13,935.66x = 147,077,376.73
  5. Step 5: Solve for x
    x = 147,077,376.73/13,935.66
  6. Step 6: Final answer
    x = 10,554.03

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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.