Home / 21,556.44-29,740.95-13,055.85

Finding the Fourth Proportional to 21,556.44, 29,740.95 and 13,055.85

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Solution

The fourth proportional to 21,556.44, 29,740.95 and 13,055.85 is: 18,012.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.44 : 29,740.95 = 13,055.85 : x
  2. Step 2: Convert to fraction form
    21,556.44/29,740.95 = 13,055.85/x
  3. Step 3: Cross multiply
    21,556.44x = 29,740.95 × 13,055.85
  4. Step 4: Simplify right side
    21,556.44x = 388,293,382.06
  5. Step 5: Solve for x
    x = 388,293,382.06/21,556.44
  6. Step 6: Final answer
    x = 18,012.87

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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.