Home / 21,172.38-29,231.67-14,455.56

Finding the Fourth Proportional to 21,172.38, 29,231.67 and 14,455.56

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Solution

The fourth proportional to 21,172.38, 29,231.67 and 14,455.56 is: 19,958.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.38 : 29,231.67 = 14,455.56 : x
  2. Step 2: Convert to fraction form
    21,172.38/29,231.67 = 14,455.56/x
  3. Step 3: Cross multiply
    21,172.38x = 29,231.67 × 14,455.56
  4. Step 4: Simplify right side
    21,172.38x = 422,560,159.59
  5. Step 5: Solve for x
    x = 422,560,159.59/21,172.38
  6. Step 6: Final answer
    x = 19,958.08

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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.