Home / 14,121.88-21,064.28-12,974.33

Finding the Fourth Proportional to 14,121.88, 21,064.28 and 12,974.33

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Solution

The fourth proportional to 14,121.88, 21,064.28 and 12,974.33 is: 19,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.88 : 21,064.28 = 12,974.33 : x
  2. Step 2: Convert to fraction form
    14,121.88/21,064.28 = 12,974.33/x
  3. Step 3: Cross multiply
    14,121.88x = 21,064.28 × 12,974.33
  4. Step 4: Simplify right side
    14,121.88x = 273,295,005.03
  5. Step 5: Solve for x
    x = 273,295,005.03/14,121.88
  6. Step 6: Final answer
    x = 19,352.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.