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Finding the Fourth Proportional to 14,990.82, 20,774.82 and 14,779.41

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Solution

The fourth proportional to 14,990.82, 20,774.82 and 14,779.41 is: 20,481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.82 : 20,774.82 = 14,779.41 : x
  2. Step 2: Convert to fraction form
    14,990.82/20,774.82 = 14,779.41/x
  3. Step 3: Cross multiply
    14,990.82x = 20,774.82 × 14,779.41
  4. Step 4: Simplify right side
    14,990.82x = 307,039,559.97
  5. Step 5: Solve for x
    x = 307,039,559.97/14,990.82
  6. Step 6: Final answer
    x = 20,481.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.