Home / 21,110.48-29,119.77-13,940.46

Finding the Fourth Proportional to 21,110.48, 29,119.77 and 13,940.46

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Solution

The fourth proportional to 21,110.48, 29,119.77 and 13,940.46 is: 19,229.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.48 : 29,119.77 = 13,940.46 : x
  2. Step 2: Convert to fraction form
    21,110.48/29,119.77 = 13,940.46/x
  3. Step 3: Cross multiply
    21,110.48x = 29,119.77 × 13,940.46
  4. Step 4: Simplify right side
    21,110.48x = 405,942,988.89
  5. Step 5: Solve for x
    x = 405,942,988.89/21,110.48
  6. Step 6: Final answer
    x = 19,229.45

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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.