Home / 21,556.25-29,751.27-12,480.29

Finding the Fourth Proportional to 21,556.25, 29,751.27 and 12,480.29

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Solution

The fourth proportional to 21,556.25, 29,751.27 and 12,480.29 is: 17,224.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.25 : 29,751.27 = 12,480.29 : x
  2. Step 2: Convert to fraction form
    21,556.25/29,751.27 = 12,480.29/x
  3. Step 3: Cross multiply
    21,556.25x = 29,751.27 × 12,480.29
  4. Step 4: Simplify right side
    21,556.25x = 371,304,477.47
  5. Step 5: Solve for x
    x = 371,304,477.47/21,556.25
  6. Step 6: Final answer
    x = 17,224.91

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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.