Home / 13,708.11-18,918.09-7,739.93

Finding the Fourth Proportional to 13,708.11, 18,918.09 and 7,739.93

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Solution

The fourth proportional to 13,708.11, 18,918.09 and 7,739.93 is: 10,681.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.11 : 18,918.09 = 7,739.93 : x
  2. Step 2: Convert to fraction form
    13,708.11/18,918.09 = 7,739.93/x
  3. Step 3: Cross multiply
    13,708.11x = 18,918.09 × 7,739.93
  4. Step 4: Simplify right side
    13,708.11x = 146,424,739.63
  5. Step 5: Solve for x
    x = 146,424,739.63/13,708.11
  6. Step 6: Final answer
    x = 10,681.61

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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.