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Finding the Fourth Proportional to 28,466.84, 42,692.90 and 8,471.64

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Solution

The fourth proportional to 28,466.84, 42,692.90 and 8,471.64 is: 12,705.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,466.84 : 42,692.90 = 8,471.64 : x
  2. Step 2: Convert to fraction form
    28,466.84/42,692.90 = 8,471.64/x
  3. Step 3: Cross multiply
    28,466.84x = 42,692.90 × 8,471.64
  4. Step 4: Simplify right side
    28,466.84x = 361,678,780.78
  5. Step 5: Solve for x
    x = 361,678,780.78/28,466.84
  6. Step 6: Final answer
    x = 12,705.27

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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.