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Finding the Fourth Proportional to 21,653.08, 32,480.53 and 6,861.67

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Solution

The fourth proportional to 21,653.08, 32,480.53 and 6,861.67 is: 10,292.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.08 : 32,480.53 = 6,861.67 : x
  2. Step 2: Convert to fraction form
    21,653.08/32,480.53 = 6,861.67/x
  3. Step 3: Cross multiply
    21,653.08x = 32,480.53 × 6,861.67
  4. Step 4: Simplify right side
    21,653.08x = 222,870,579.93
  5. Step 5: Solve for x
    x = 222,870,579.93/21,653.08
  6. Step 6: Final answer
    x = 10,292.79

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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.