Home / 19,876.49-27,400.66-13,889.58

Finding the Fourth Proportional to 19,876.49, 27,400.66 and 13,889.58

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Solution

The fourth proportional to 19,876.49, 27,400.66 and 13,889.58 is: 19,147.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.49 : 27,400.66 = 13,889.58 : x
  2. Step 2: Convert to fraction form
    19,876.49/27,400.66 = 13,889.58/x
  3. Step 3: Cross multiply
    19,876.49x = 27,400.66 × 13,889.58
  4. Step 4: Simplify right side
    19,876.49x = 380,583,624.40
  5. Step 5: Solve for x
    x = 380,583,624.40/19,876.49
  6. Step 6: Final answer
    x = 19,147.42

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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.