Home / 13,822.21-19,076.16-7,855.33

Finding the Fourth Proportional to 13,822.21, 19,076.16 and 7,855.33

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Solution

The fourth proportional to 13,822.21, 19,076.16 and 7,855.33 is: 10,841.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,822.21 : 19,076.16 = 7,855.33 : x
  2. Step 2: Convert to fraction form
    13,822.21/19,076.16 = 7,855.33/x
  3. Step 3: Cross multiply
    13,822.21x = 19,076.16 × 7,855.33
  4. Step 4: Simplify right side
    13,822.21x = 149,849,531.93
  5. Step 5: Solve for x
    x = 149,849,531.93/13,822.21
  6. Step 6: Final answer
    x = 10,841.21

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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.