Home / 13,968.84-20,940.30-7,389.48

Finding the Fourth Proportional to 13,968.84, 20,940.30 and 7,389.48

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Solution

The fourth proportional to 13,968.84, 20,940.30 and 7,389.48 is: 11,077.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.84 : 20,940.30 = 7,389.48 : x
  2. Step 2: Convert to fraction form
    13,968.84/20,940.30 = 7,389.48/x
  3. Step 3: Cross multiply
    13,968.84x = 20,940.30 × 7,389.48
  4. Step 4: Simplify right side
    13,968.84x = 154,737,928.04
  5. Step 5: Solve for x
    x = 154,737,928.04/13,968.84
  6. Step 6: Final answer
    x = 11,077.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.