Home / 20,644.33-28,484.30-12,146.83

Finding the Fourth Proportional to 20,644.33, 28,484.30 and 12,146.83

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Solution

The fourth proportional to 20,644.33, 28,484.30 and 12,146.83 is: 16,759.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.33 : 28,484.30 = 12,146.83 : x
  2. Step 2: Convert to fraction form
    20,644.33/28,484.30 = 12,146.83/x
  3. Step 3: Cross multiply
    20,644.33x = 28,484.30 × 12,146.83
  4. Step 4: Simplify right side
    20,644.33x = 345,993,746.61
  5. Step 5: Solve for x
    x = 345,993,746.61/20,644.33
  6. Step 6: Final answer
    x = 16,759.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.