Home / 13,982.40-19,288.80-11,908.80

Finding the Fourth Proportional to 13,982.40, 19,288.80 and 11,908.80

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Solution

The fourth proportional to 13,982.40, 19,288.80 and 11,908.80 is: 16,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.40 : 19,288.80 = 11,908.80 : x
  2. Step 2: Convert to fraction form
    13,982.40/19,288.80 = 11,908.80/x
  3. Step 3: Cross multiply
    13,982.40x = 19,288.80 × 11,908.80
  4. Step 4: Simplify right side
    13,982.40x = 229,706,461.44
  5. Step 5: Solve for x
    x = 229,706,461.44/13,982.40
  6. Step 6: Final answer
    x = 16,428.26

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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.