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Finding the Fourth Proportional to 13,480, 20,220 and 3,752

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Solution

The fourth proportional to 13,480, 20,220 and 3,752 is: 5,628

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480 : 20,220 = 3,752 : x
  2. Step 2: Convert to fraction form
    13,480/20,220 = 3,752/x
  3. Step 3: Cross multiply
    13,480x = 20,220 × 3,752
  4. Step 4: Simplify right side
    13,480x = 75,865,440
  5. Step 5: Solve for x
    x = 75,865,440/13,480
  6. Step 6: Final answer
    x = 5,628

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