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Finding the Fourth Proportional to 18,085.94, 27,125.80 and 5,435.50

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Solution

The fourth proportional to 18,085.94, 27,125.80 and 5,435.50 is: 8,152.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085.94 : 27,125.80 = 5,435.50 : x
  2. Step 2: Convert to fraction form
    18,085.94/27,125.80 = 5,435.50/x
  3. Step 3: Cross multiply
    18,085.94x = 27,125.80 × 5,435.50
  4. Step 4: Simplify right side
    18,085.94x = 147,442,285.90
  5. Step 5: Solve for x
    x = 147,442,285.90/18,085.94
  6. Step 6: Final answer
    x = 8,152.32

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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.