Home / 13,872.39-19,160.31-9,388.36

Finding the Fourth Proportional to 13,872.39, 19,160.31 and 9,388.36

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Solution

The fourth proportional to 13,872.39, 19,160.31 and 9,388.36 is: 12,967.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.39 : 19,160.31 = 9,388.36 : x
  2. Step 2: Convert to fraction form
    13,872.39/19,160.31 = 9,388.36/x
  3. Step 3: Cross multiply
    13,872.39x = 19,160.31 × 9,388.36
  4. Step 4: Simplify right side
    13,872.39x = 179,883,887.99
  5. Step 5: Solve for x
    x = 179,883,887.99/13,872.39
  6. Step 6: Final answer
    x = 12,967.04

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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.