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Finding the Fourth Proportional to 20,472, 30,708 and 5,880

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Solution

The fourth proportional to 20,472, 30,708 and 5,880 is: 8,820

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472 : 30,708 = 5,880 : x
  2. Step 2: Convert to fraction form
    20,472/30,708 = 5,880/x
  3. Step 3: Cross multiply
    20,472x = 30,708 × 5,880
  4. Step 4: Simplify right side
    20,472x = 180,563,040
  5. Step 5: Solve for x
    x = 180,563,040/20,472
  6. Step 6: Final answer
    x = 8,820

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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.