Home / 13,348.44-18,420.78-7,380

Finding the Fourth Proportional to 13,348.44, 18,420.78 and 7,380

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Solution

The fourth proportional to 13,348.44, 18,420.78 and 7,380 is: 10,184.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.44 : 18,420.78 = 7,380 : x
  2. Step 2: Convert to fraction form
    13,348.44/18,420.78 = 7,380/x
  3. Step 3: Cross multiply
    13,348.44x = 18,420.78 × 7,380
  4. Step 4: Simplify right side
    13,348.44x = 135,945,356.40
  5. Step 5: Solve for x
    x = 135,945,356.40/13,348.44
  6. Step 6: Final answer
    x = 10,184.36

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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.