Home / 13,021.89-17,968.93-7,278.29

Finding the Fourth Proportional to 13,021.89, 17,968.93 and 7,278.29

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Solution

The fourth proportional to 13,021.89, 17,968.93 and 7,278.29 is: 10,043.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.89 : 17,968.93 = 7,278.29 : x
  2. Step 2: Convert to fraction form
    13,021.89/17,968.93 = 7,278.29/x
  3. Step 3: Cross multiply
    13,021.89x = 17,968.93 × 7,278.29
  4. Step 4: Simplify right side
    13,021.89x = 130,783,083.53
  5. Step 5: Solve for x
    x = 130,783,083.53/13,021.89
  6. Step 6: Final answer
    x = 10,043.33

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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.