Home / 13,986.75-19,301.79-7,699.13

Finding the Fourth Proportional to 13,986.75, 19,301.79 and 7,699.13

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Solution

The fourth proportional to 13,986.75, 19,301.79 and 7,699.13 is: 10,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.75 : 19,301.79 = 7,699.13 : x
  2. Step 2: Convert to fraction form
    13,986.75/19,301.79 = 7,699.13/x
  3. Step 3: Cross multiply
    13,986.75x = 19,301.79 × 7,699.13
  4. Step 4: Simplify right side
    13,986.75x = 148,606,893.93
  5. Step 5: Solve for x
    x = 148,606,893.93/13,986.75
  6. Step 6: Final answer
    x = 10,624.83

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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.