Home / 13,561.65-18,716.86-7,896.50

Finding the Fourth Proportional to 13,561.65, 18,716.86 and 7,896.50

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Solution

The fourth proportional to 13,561.65, 18,716.86 and 7,896.50 is: 10,898.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.65 : 18,716.86 = 7,896.50 : x
  2. Step 2: Convert to fraction form
    13,561.65/18,716.86 = 7,896.50/x
  3. Step 3: Cross multiply
    13,561.65x = 18,716.86 × 7,896.50
  4. Step 4: Simplify right side
    13,561.65x = 147,797,684.99
  5. Step 5: Solve for x
    x = 147,797,684.99/13,561.65
  6. Step 6: Final answer
    x = 10,898.21

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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.