Home / 28,605.60-42,850.80-18,180

Finding the Fourth Proportional to 28,605.60, 42,850.80 and 18,180

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Solution

The fourth proportional to 28,605.60, 42,850.80 and 18,180 is: 27,233.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.60 : 42,850.80 = 18,180 : x
  2. Step 2: Convert to fraction form
    28,605.60/42,850.80 = 18,180/x
  3. Step 3: Cross multiply
    28,605.60x = 42,850.80 × 18,180
  4. Step 4: Simplify right side
    28,605.60x = 779,027,544
  5. Step 5: Solve for x
    x = 779,027,544/28,605.60
  6. Step 6: Final answer
    x = 27,233.39

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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.