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Finding the Fourth Proportional to 21,636.96, 32,458.72 and 6,840.96

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Solution

The fourth proportional to 21,636.96, 32,458.72 and 6,840.96 is: 10,262.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.96 : 32,458.72 = 6,840.96 : x
  2. Step 2: Convert to fraction form
    21,636.96/32,458.72 = 6,840.96/x
  3. Step 3: Cross multiply
    21,636.96x = 32,458.72 × 6,840.96
  4. Step 4: Simplify right side
    21,636.96x = 222,048,805.17
  5. Step 5: Solve for x
    x = 222,048,805.17/21,636.96
  6. Step 6: Final answer
    x = 10,262.48

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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.