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Finding the Fourth Proportional to 28,635.80, 42,880.80 and 27,323.60

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Solution

The fourth proportional to 28,635.80, 42,880.80 and 27,323.60 is: 40,915.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635.80 : 42,880.80 = 27,323.60 : x
  2. Step 2: Convert to fraction form
    28,635.80/42,880.80 = 27,323.60/x
  3. Step 3: Cross multiply
    28,635.80x = 42,880.80 × 27,323.60
  4. Step 4: Simplify right side
    28,635.80x = 1,171,657,826.88
  5. Step 5: Solve for x
    x = 1,171,657,826.88/28,635.80
  6. Step 6: Final answer
    x = 40,915.84

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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.