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Finding the Fourth Proportional to 15,167.64, 20,933.16 and 8,880

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Solution

The fourth proportional to 15,167.64, 20,933.16 and 8,880 is: 12,255.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,167.64 : 20,933.16 = 8,880 : x
  2. Step 2: Convert to fraction form
    15,167.64/20,933.16 = 8,880/x
  3. Step 3: Cross multiply
    15,167.64x = 20,933.16 × 8,880
  4. Step 4: Simplify right side
    15,167.64x = 185,886,460.80
  5. Step 5: Solve for x
    x = 185,886,460.80/15,167.64
  6. Step 6: Final answer
    x = 12,255.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.