Home / 13,687.80-20,532.21-6,189.93

Finding the Fourth Proportional to 13,687.80, 20,532.21 and 6,189.93

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Solution

The fourth proportional to 13,687.80, 20,532.21 and 6,189.93 is: 9,285.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.80 : 20,532.21 = 6,189.93 : x
  2. Step 2: Convert to fraction form
    13,687.80/20,532.21 = 6,189.93/x
  3. Step 3: Cross multiply
    13,687.80x = 20,532.21 × 6,189.93
  4. Step 4: Simplify right side
    13,687.80x = 127,092,942.65
  5. Step 5: Solve for x
    x = 127,092,942.65/13,687.80
  6. Step 6: Final answer
    x = 9,285.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.