Home / 13,138.07-19,611.18-11,395.35

Finding the Fourth Proportional to 13,138.07, 19,611.18 and 11,395.35

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Solution

The fourth proportional to 13,138.07, 19,611.18 and 11,395.35 is: 17,009.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.07 : 19,611.18 = 11,395.35 : x
  2. Step 2: Convert to fraction form
    13,138.07/19,611.18 = 11,395.35/x
  3. Step 3: Cross multiply
    13,138.07x = 19,611.18 × 11,395.35
  4. Step 4: Simplify right side
    13,138.07x = 223,476,260.01
  5. Step 5: Solve for x
    x = 223,476,260.01/13,138.07
  6. Step 6: Final answer
    x = 17,009.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.