Home / 21,485.18-32,234.60-13,636.58

Finding the Fourth Proportional to 21,485.18, 32,234.60 and 13,636.58

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Solution

The fourth proportional to 21,485.18, 32,234.60 and 13,636.58 is: 20,459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,485.18 : 32,234.60 = 13,636.58 : x
  2. Step 2: Convert to fraction form
    21,485.18/32,234.60 = 13,636.58/x
  3. Step 3: Cross multiply
    21,485.18x = 32,234.60 × 13,636.58
  4. Step 4: Simplify right side
    21,485.18x = 439,569,644.33
  5. Step 5: Solve for x
    x = 439,569,644.33/21,485.18
  6. Step 6: Final answer
    x = 20,459.21

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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.