Home / 21,338.50-29,447.07-11,907.07

Finding the Fourth Proportional to 21,338.50, 29,447.07 and 11,907.07

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Solution

The fourth proportional to 21,338.50, 29,447.07 and 11,907.07 is: 16,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.50 : 29,447.07 = 11,907.07 : x
  2. Step 2: Convert to fraction form
    21,338.50/29,447.07 = 11,907.07/x
  3. Step 3: Cross multiply
    21,338.50x = 29,447.07 × 11,907.07
  4. Step 4: Simplify right side
    21,338.50x = 350,628,323.78
  5. Step 5: Solve for x
    x = 350,628,323.78/21,338.50
  6. Step 6: Final answer
    x = 16,431.72

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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.