Home / 19,378.78-26,735.82-12,668.26

Finding the Fourth Proportional to 19,378.78, 26,735.82 and 12,668.26

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Solution

The fourth proportional to 19,378.78, 26,735.82 and 12,668.26 is: 17,477.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,378.78 : 26,735.82 = 12,668.26 : x
  2. Step 2: Convert to fraction form
    19,378.78/26,735.82 = 12,668.26/x
  3. Step 3: Cross multiply
    19,378.78x = 26,735.82 × 12,668.26
  4. Step 4: Simplify right side
    19,378.78x = 338,696,319.07
  5. Step 5: Solve for x
    x = 338,696,319.07/19,378.78
  6. Step 6: Final answer
    x = 17,477.69

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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.