Home / 12,828.41-19,228.03-5,428.25

Finding the Fourth Proportional to 12,828.41, 19,228.03 and 5,428.25

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Solution

The fourth proportional to 12,828.41, 19,228.03 and 5,428.25 is: 8,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,828.41 : 19,228.03 = 5,428.25 : x
  2. Step 2: Convert to fraction form
    12,828.41/19,228.03 = 5,428.25/x
  3. Step 3: Cross multiply
    12,828.41x = 19,228.03 × 5,428.25
  4. Step 4: Simplify right side
    12,828.41x = 104,374,553.85
  5. Step 5: Solve for x
    x = 104,374,553.85/12,828.41
  6. Step 6: Final answer
    x = 8,136.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.