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Finding the Fourth Proportional to 21,630.42, 32,448.87 and 6,834.60

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Solution

The fourth proportional to 21,630.42, 32,448.87 and 6,834.60 is: 10,252.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.42 : 32,448.87 = 6,834.60 : x
  2. Step 2: Convert to fraction form
    21,630.42/32,448.87 = 6,834.60/x
  3. Step 3: Cross multiply
    21,630.42x = 32,448.87 × 6,834.60
  4. Step 4: Simplify right side
    21,630.42x = 221,775,046.90
  5. Step 5: Solve for x
    x = 221,775,046.90/21,630.42
  6. Step 6: Final answer
    x = 10,252.92

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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.