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Finding the Fourth Proportional to 28,072.76, 42,108.48 and 8,351.52

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Solution

The fourth proportional to 28,072.76, 42,108.48 and 8,351.52 is: 12,527.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.76 : 42,108.48 = 8,351.52 : x
  2. Step 2: Convert to fraction form
    28,072.76/42,108.48 = 8,351.52/x
  3. Step 3: Cross multiply
    28,072.76x = 42,108.48 × 8,351.52
  4. Step 4: Simplify right side
    28,072.76x = 351,669,812.89
  5. Step 5: Solve for x
    x = 351,669,812.89/28,072.76
  6. Step 6: Final answer
    x = 12,527.08

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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.