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Finding the Fourth Proportional to 28,348, 42,523.80 and 8,628.01

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Solution

The fourth proportional to 28,348, 42,523.80 and 8,628.01 is: 12,942.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,348 : 42,523.80 = 8,628.01 : x
  2. Step 2: Convert to fraction form
    28,348/42,523.80 = 8,628.01/x
  3. Step 3: Cross multiply
    28,348x = 42,523.80 × 8,628.01
  4. Step 4: Simplify right side
    28,348x = 366,895,771.64
  5. Step 5: Solve for x
    x = 366,895,771.64/28,348
  6. Step 6: Final answer
    x = 12,942.56

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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.