Home / 13,722.51-18,919.84-11,202.06

Finding the Fourth Proportional to 13,722.51, 18,919.84 and 11,202.06

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Solution

The fourth proportional to 13,722.51, 18,919.84 and 11,202.06 is: 15,444.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.51 : 18,919.84 = 11,202.06 : x
  2. Step 2: Convert to fraction form
    13,722.51/18,919.84 = 11,202.06/x
  3. Step 3: Cross multiply
    13,722.51x = 18,919.84 × 11,202.06
  4. Step 4: Simplify right side
    13,722.51x = 211,941,182.87
  5. Step 5: Solve for x
    x = 211,941,182.87/13,722.51
  6. Step 6: Final answer
    x = 15,444.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.