Home / 21,817.07-30,106.73-13,333.38

Finding the Fourth Proportional to 21,817.07, 30,106.73 and 13,333.38

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Solution

The fourth proportional to 21,817.07, 30,106.73 and 13,333.38 is: 18,399.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.07 : 30,106.73 = 13,333.38 : x
  2. Step 2: Convert to fraction form
    21,817.07/30,106.73 = 13,333.38/x
  3. Step 3: Cross multiply
    21,817.07x = 30,106.73 × 13,333.38
  4. Step 4: Simplify right side
    21,817.07x = 401,424,471.65
  5. Step 5: Solve for x
    x = 401,424,471.65/21,817.07
  6. Step 6: Final answer
    x = 18,399.56

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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.