Home / 19,388.16-26,759.12-11,429.92

Finding the Fourth Proportional to 19,388.16, 26,759.12 and 11,429.92

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Solution

The fourth proportional to 19,388.16, 26,759.12 and 11,429.92 is: 15,775.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,388.16 : 26,759.12 = 11,429.92 : x
  2. Step 2: Convert to fraction form
    19,388.16/26,759.12 = 11,429.92/x
  3. Step 3: Cross multiply
    19,388.16x = 26,759.12 × 11,429.92
  4. Step 4: Simplify right side
    19,388.16x = 305,854,600.87
  5. Step 5: Solve for x
    x = 305,854,600.87/19,388.16
  6. Step 6: Final answer
    x = 15,775.33

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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.