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Finding the Fourth Proportional to 11,052.76, 16,578.90 and 4,478.80

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Solution

The fourth proportional to 11,052.76, 16,578.90 and 4,478.80 is: 6,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,052.76 : 16,578.90 = 4,478.80 : x
  2. Step 2: Convert to fraction form
    11,052.76/16,578.90 = 4,478.80/x
  3. Step 3: Cross multiply
    11,052.76x = 16,578.90 × 4,478.80
  4. Step 4: Simplify right side
    11,052.76x = 74,253,577.32
  5. Step 5: Solve for x
    x = 74,253,577.32/11,052.76
  6. Step 6: Final answer
    x = 6,718.10

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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.