Home / 19,921.25-27,491.33-11,089.25

Finding the Fourth Proportional to 19,921.25, 27,491.33 and 11,089.25

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Solution

The fourth proportional to 19,921.25, 27,491.33 and 11,089.25 is: 15,303.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.25 : 27,491.33 = 11,089.25 : x
  2. Step 2: Convert to fraction form
    19,921.25/27,491.33 = 11,089.25/x
  3. Step 3: Cross multiply
    19,921.25x = 27,491.33 × 11,089.25
  4. Step 4: Simplify right side
    19,921.25x = 304,858,231.20
  5. Step 5: Solve for x
    x = 304,858,231.20/19,921.25
  6. Step 6: Final answer
    x = 15,303.17

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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.