Home / 21,084.36-29,102.46-13,919.46

Finding the Fourth Proportional to 21,084.36, 29,102.46 and 13,919.46

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Solution

The fourth proportional to 21,084.36, 29,102.46 and 13,919.46 is: 19,212.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.36 : 29,102.46 = 13,919.46 : x
  2. Step 2: Convert to fraction form
    21,084.36/29,102.46 = 13,919.46/x
  3. Step 3: Cross multiply
    21,084.36x = 29,102.46 × 13,919.46
  4. Step 4: Simplify right side
    21,084.36x = 405,090,527.87
  5. Step 5: Solve for x
    x = 405,090,527.87/21,084.36
  6. Step 6: Final answer
    x = 19,212.84

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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.