Home / 28,072.68-42,135.48-20,654.52

Finding the Fourth Proportional to 28,072.68, 42,135.48 and 20,654.52

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Solution

The fourth proportional to 28,072.68, 42,135.48 and 20,654.52 is: 31,001.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.68 : 42,135.48 = 20,654.52 : x
  2. Step 2: Convert to fraction form
    28,072.68/42,135.48 = 20,654.52/x
  3. Step 3: Cross multiply
    28,072.68x = 42,135.48 × 20,654.52
  4. Step 4: Simplify right side
    28,072.68x = 870,288,114.37
  5. Step 5: Solve for x
    x = 870,288,114.37/28,072.68
  6. Step 6: Final answer
    x = 31,001.25

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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.