Home / 19,643.28-27,039.26-17,121.00

Finding the Fourth Proportional to 19,643.28, 27,039.26 and 17,121.00

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Solution

The fourth proportional to 19,643.28, 27,039.26 and 17,121.00 is: 23,567.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.28 : 27,039.26 = 17,121.00 : x
  2. Step 2: Convert to fraction form
    19,643.28/27,039.26 = 17,121.00/x
  3. Step 3: Cross multiply
    19,643.28x = 27,039.26 × 17,121.00
  4. Step 4: Simplify right side
    19,643.28x = 462,939,152.45
  5. Step 5: Solve for x
    x = 462,939,152.45/19,643.28
  6. Step 6: Final answer
    x = 23,567.31

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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.