Home / 19,928.12-27,511.36-15,441.80

Finding the Fourth Proportional to 19,928.12, 27,511.36 and 15,441.80

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Solution

The fourth proportional to 19,928.12, 27,511.36 and 15,441.80 is: 21,317.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928.12 : 27,511.36 = 15,441.80 : x
  2. Step 2: Convert to fraction form
    19,928.12/27,511.36 = 15,441.80/x
  3. Step 3: Cross multiply
    19,928.12x = 27,511.36 × 15,441.80
  4. Step 4: Simplify right side
    19,928.12x = 424,824,918.85
  5. Step 5: Solve for x
    x = 424,824,918.85/19,928.12
  6. Step 6: Final answer
    x = 21,317.86

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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.