Home / 12,740.78-19,111.07-5,244.27

Finding the Fourth Proportional to 12,740.78, 19,111.07 and 5,244.27

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Solution

The fourth proportional to 12,740.78, 19,111.07 and 5,244.27 is: 7,866.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.78 : 19,111.07 = 5,244.27 : x
  2. Step 2: Convert to fraction form
    12,740.78/19,111.07 = 5,244.27/x
  3. Step 3: Cross multiply
    12,740.78x = 19,111.07 × 5,244.27
  4. Step 4: Simplify right side
    12,740.78x = 100,223,584.85
  5. Step 5: Solve for x
    x = 100,223,584.85/12,740.78
  6. Step 6: Final answer
    x = 7,866.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.