Home / 13,615.62-18,789.45-7,647.27

Finding the Fourth Proportional to 13,615.62, 18,789.45 and 7,647.27

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Solution

The fourth proportional to 13,615.62, 18,789.45 and 7,647.27 is: 10,553.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.62 : 18,789.45 = 7,647.27 : x
  2. Step 2: Convert to fraction form
    13,615.62/18,789.45 = 7,647.27/x
  3. Step 3: Cross multiply
    13,615.62x = 18,789.45 × 7,647.27
  4. Step 4: Simplify right side
    13,615.62x = 143,687,997.30
  5. Step 5: Solve for x
    x = 143,687,997.30/13,615.62
  6. Step 6: Final answer
    x = 10,553.17

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1.5x scale

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.