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Finding the Fourth Proportional to 28,085.62, 42,133.29 and 8,362.12

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Solution

The fourth proportional to 28,085.62, 42,133.29 and 8,362.12 is: 12,544.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.62 : 42,133.29 = 8,362.12 : x
  2. Step 2: Convert to fraction form
    28,085.62/42,133.29 = 8,362.12/x
  3. Step 3: Cross multiply
    28,085.62x = 42,133.29 × 8,362.12
  4. Step 4: Simplify right side
    28,085.62x = 352,323,626.97
  5. Step 5: Solve for x
    x = 352,323,626.97/28,085.62
  6. Step 6: Final answer
    x = 12,544.63

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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.