Home / 14,072.75-21,214.55-13,121.45

Finding the Fourth Proportional to 14,072.75, 21,214.55 and 13,121.45

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Solution

The fourth proportional to 14,072.75, 21,214.55 and 13,121.45 is: 19,780.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,072.75 : 21,214.55 = 13,121.45 : x
  2. Step 2: Convert to fraction form
    14,072.75/21,214.55 = 13,121.45/x
  3. Step 3: Cross multiply
    14,072.75x = 21,214.55 × 13,121.45
  4. Step 4: Simplify right side
    14,072.75x = 278,365,485.42
  5. Step 5: Solve for x
    x = 278,365,485.42/14,072.75
  6. Step 6: Final answer
    x = 19,780.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.