Home / 13,678.40-18,828.78-11,796.23

Finding the Fourth Proportional to 13,678.40, 18,828.78 and 11,796.23

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Solution

The fourth proportional to 13,678.40, 18,828.78 and 11,796.23 is: 16,237.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.40 : 18,828.78 = 11,796.23 : x
  2. Step 2: Convert to fraction form
    13,678.40/18,828.78 = 11,796.23/x
  3. Step 3: Cross multiply
    13,678.40x = 18,828.78 × 11,796.23
  4. Step 4: Simplify right side
    13,678.40x = 222,108,619.50
  5. Step 5: Solve for x
    x = 222,108,619.50/13,678.40
  6. Step 6: Final answer
    x = 16,237.91

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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.