Home / 28,662.66-42,938.06-18,771.93

Finding the Fourth Proportional to 28,662.66, 42,938.06 and 18,771.93

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Solution

The fourth proportional to 28,662.66, 42,938.06 and 18,771.93 is: 28,121.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662.66 : 42,938.06 = 18,771.93 : x
  2. Step 2: Convert to fraction form
    28,662.66/42,938.06 = 18,771.93/x
  3. Step 3: Cross multiply
    28,662.66x = 42,938.06 × 18,771.93
  4. Step 4: Simplify right side
    28,662.66x = 806,030,162.80
  5. Step 5: Solve for x
    x = 806,030,162.80/28,662.66
  6. Step 6: Final answer
    x = 28,121.26

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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.