Home / 13,664.78-18,857.60-7,615.02

Finding the Fourth Proportional to 13,664.78, 18,857.60 and 7,615.02

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Solution

The fourth proportional to 13,664.78, 18,857.60 and 7,615.02 is: 10,508.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.78 : 18,857.60 = 7,615.02 : x
  2. Step 2: Convert to fraction form
    13,664.78/18,857.60 = 7,615.02/x
  3. Step 3: Cross multiply
    13,664.78x = 18,857.60 × 7,615.02
  4. Step 4: Simplify right side
    13,664.78x = 143,601,020.19
  5. Step 5: Solve for x
    x = 143,601,020.19/13,664.78
  6. Step 6: Final answer
    x = 10,508.85

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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.