Home / 13,239.36-19,870.20-5,453.64

Finding the Fourth Proportional to 13,239.36, 19,870.20 and 5,453.64

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Solution

The fourth proportional to 13,239.36, 19,870.20 and 5,453.64 is: 8,185.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.36 : 19,870.20 = 5,453.64 : x
  2. Step 2: Convert to fraction form
    13,239.36/19,870.20 = 5,453.64/x
  3. Step 3: Cross multiply
    13,239.36x = 19,870.20 × 5,453.64
  4. Step 4: Simplify right side
    13,239.36x = 108,364,917.53
  5. Step 5: Solve for x
    x = 108,364,917.53/13,239.36
  6. Step 6: Final answer
    x = 8,185.06

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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.