Home / 13,186.78-19,794.06-12,889.26

Finding the Fourth Proportional to 13,186.78, 19,794.06 and 12,889.26

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Solution

The fourth proportional to 13,186.78, 19,794.06 and 12,889.26 is: 19,347.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.78 : 19,794.06 = 12,889.26 : x
  2. Step 2: Convert to fraction form
    13,186.78/19,794.06 = 12,889.26/x
  3. Step 3: Cross multiply
    13,186.78x = 19,794.06 × 12,889.26
  4. Step 4: Simplify right side
    13,186.78x = 255,130,785.80
  5. Step 5: Solve for x
    x = 255,130,785.80/13,186.78
  6. Step 6: Final answer
    x = 19,347.47

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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.