Home / 13,558.14-20,340.30-5,238.18

Finding the Fourth Proportional to 13,558.14, 20,340.30 and 5,238.18

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Solution

The fourth proportional to 13,558.14, 20,340.30 and 5,238.18 is: 7,858.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.14 : 20,340.30 = 5,238.18 : x
  2. Step 2: Convert to fraction form
    13,558.14/20,340.30 = 5,238.18/x
  3. Step 3: Cross multiply
    13,558.14x = 20,340.30 × 5,238.18
  4. Step 4: Simplify right side
    13,558.14x = 106,546,152.65
  5. Step 5: Solve for x
    x = 106,546,152.65/13,558.14
  6. Step 6: Final answer
    x = 7,858.46

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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.