Home / 20,928.48-28,861.02-14,137.44

Finding the Fourth Proportional to 20,928.48, 28,861.02 and 14,137.44

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Solution

The fourth proportional to 20,928.48, 28,861.02 and 14,137.44 is: 19,495.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.48 : 28,861.02 = 14,137.44 : x
  2. Step 2: Convert to fraction form
    20,928.48/28,861.02 = 14,137.44/x
  3. Step 3: Cross multiply
    20,928.48x = 28,861.02 × 14,137.44
  4. Step 4: Simplify right side
    20,928.48x = 408,020,938.59
  5. Step 5: Solve for x
    x = 408,020,938.59/20,928.48
  6. Step 6: Final answer
    x = 19,495.97

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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.