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Finding the Fourth Proportional to 28,902.94, 43,354.42 and 8,126.44

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Solution

The fourth proportional to 28,902.94, 43,354.42 and 8,126.44 is: 12,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.94 : 43,354.42 = 8,126.44 : x
  2. Step 2: Convert to fraction form
    28,902.94/43,354.42 = 8,126.44/x
  3. Step 3: Cross multiply
    28,902.94x = 43,354.42 × 8,126.44
  4. Step 4: Simplify right side
    28,902.94x = 352,316,964.16
  5. Step 5: Solve for x
    x = 352,316,964.16/28,902.94
  6. Step 6: Final answer
    x = 12,189.66

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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.