Home / 21,089.23-29,110.46-13,556.23

Finding the Fourth Proportional to 21,089.23, 29,110.46 and 13,556.23

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Solution

The fourth proportional to 21,089.23, 29,110.46 and 13,556.23 is: 18,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.23 : 29,110.46 = 13,556.23 : x
  2. Step 2: Convert to fraction form
    21,089.23/29,110.46 = 13,556.23/x
  3. Step 3: Cross multiply
    21,089.23x = 29,110.46 × 13,556.23
  4. Step 4: Simplify right side
    21,089.23x = 394,628,091.17
  5. Step 5: Solve for x
    x = 394,628,091.17/21,089.23
  6. Step 6: Final answer
    x = 18,712.30

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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.