Home / 13,890.78-19,151.71-10,110.92

Finding the Fourth Proportional to 13,890.78, 19,151.71 and 10,110.92

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Solution

The fourth proportional to 13,890.78, 19,151.71 and 10,110.92 is: 13,940.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.78 : 19,151.71 = 10,110.92 : x
  2. Step 2: Convert to fraction form
    13,890.78/19,151.71 = 10,110.92/x
  3. Step 3: Cross multiply
    13,890.78x = 19,151.71 × 10,110.92
  4. Step 4: Simplify right side
    13,890.78x = 193,641,286.64
  5. Step 5: Solve for x
    x = 193,641,286.64/13,890.78
  6. Step 6: Final answer
    x = 13,940.27

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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.