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Finding the Fourth Proportional to 21,835.73, 32,753.30 and 12,455.73

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Solution

The fourth proportional to 21,835.73, 32,753.30 and 12,455.73 is: 18,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,835.73 : 32,753.30 = 12,455.73 : x
  2. Step 2: Convert to fraction form
    21,835.73/32,753.30 = 12,455.73/x
  3. Step 3: Cross multiply
    21,835.73x = 32,753.30 × 12,455.73
  4. Step 4: Simplify right side
    21,835.73x = 407,966,199.13
  5. Step 5: Solve for x
    x = 407,966,199.13/21,835.73
  6. Step 6: Final answer
    x = 18,683.42

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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.