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Finding the Fourth Proportional to 13,858.36, 20,782.84 and 4,495.84

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Solution

The fourth proportional to 13,858.36, 20,782.84 and 4,495.84 is: 6,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.36 : 20,782.84 = 4,495.84 : x
  2. Step 2: Convert to fraction form
    13,858.36/20,782.84 = 4,495.84/x
  3. Step 3: Cross multiply
    13,858.36x = 20,782.84 × 4,495.84
  4. Step 4: Simplify right side
    13,858.36x = 93,436,323.39
  5. Step 5: Solve for x
    x = 93,436,323.39/13,858.36
  6. Step 6: Final answer
    x = 6,742.24

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1.5x scale

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.