Home / 19,643.65-27,039.77-17,121.38

Finding the Fourth Proportional to 19,643.65, 27,039.77 and 17,121.38

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Solution

The fourth proportional to 19,643.65, 27,039.77 and 17,121.38 is: 23,567.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.65 : 27,039.77 = 17,121.38 : x
  2. Step 2: Convert to fraction form
    19,643.65/27,039.77 = 17,121.38/x
  3. Step 3: Cross multiply
    19,643.65x = 27,039.77 × 17,121.38
  4. Step 4: Simplify right side
    19,643.65x = 462,958,177.28
  5. Step 5: Solve for x
    x = 462,958,177.28/19,643.65
  6. Step 6: Final answer
    x = 23,567.83

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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.