Home / 13,788.41-19,028.42-7,820.33

Finding the Fourth Proportional to 13,788.41, 19,028.42 and 7,820.33

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Solution

The fourth proportional to 13,788.41, 19,028.42 and 7,820.33 is: 10,792.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.41 : 19,028.42 = 7,820.33 : x
  2. Step 2: Convert to fraction form
    13,788.41/19,028.42 = 7,820.33/x
  3. Step 3: Cross multiply
    13,788.41x = 19,028.42 × 7,820.33
  4. Step 4: Simplify right side
    13,788.41x = 148,808,448.19
  5. Step 5: Solve for x
    x = 148,808,448.19/13,788.41
  6. Step 6: Final answer
    x = 10,792.29

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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.