Home / 13,212.40-19,821.30-4,448.20

Finding the Fourth Proportional to 13,212.40, 19,821.30 and 4,448.20

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Solution

The fourth proportional to 13,212.40, 19,821.30 and 4,448.20 is: 6,673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.40 : 19,821.30 = 4,448.20 : x
  2. Step 2: Convert to fraction form
    13,212.40/19,821.30 = 4,448.20/x
  3. Step 3: Cross multiply
    13,212.40x = 19,821.30 × 4,448.20
  4. Step 4: Simplify right side
    13,212.40x = 88,169,106.66
  5. Step 5: Solve for x
    x = 88,169,106.66/13,212.40
  6. Step 6: Final answer
    x = 6,673.21

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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.