Home / 20,196.51-27,870.75-11,243.58

Finding the Fourth Proportional to 20,196.51, 27,870.75 and 11,243.58

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Solution

The fourth proportional to 20,196.51, 27,870.75 and 11,243.58 is: 15,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.51 : 27,870.75 = 11,243.58 : x
  2. Step 2: Convert to fraction form
    20,196.51/27,870.75 = 11,243.58/x
  3. Step 3: Cross multiply
    20,196.51x = 27,870.75 × 11,243.58
  4. Step 4: Simplify right side
    20,196.51x = 313,367,007.29
  5. Step 5: Solve for x
    x = 313,367,007.29/20,196.51
  6. Step 6: Final answer
    x = 15,515.90

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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.