Home / 19,390.26-26,759.14-11,439.30

Finding the Fourth Proportional to 19,390.26, 26,759.14 and 11,439.30

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Solution

The fourth proportional to 19,390.26, 26,759.14 and 11,439.30 is: 15,786.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.26 : 26,759.14 = 11,439.30 : x
  2. Step 2: Convert to fraction form
    19,390.26/26,759.14 = 11,439.30/x
  3. Step 3: Cross multiply
    19,390.26x = 26,759.14 × 11,439.30
  4. Step 4: Simplify right side
    19,390.26x = 306,105,830.20
  5. Step 5: Solve for x
    x = 306,105,830.20/19,390.26
  6. Step 6: Final answer
    x = 15,786.58

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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.