Home / 18,675.40-28,020.60-7,582.95

Finding the Fourth Proportional to 18,675.40, 28,020.60 and 7,582.95

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Solution

The fourth proportional to 18,675.40, 28,020.60 and 7,582.95 is: 11,377.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.40 : 28,020.60 = 7,582.95 : x
  2. Step 2: Convert to fraction form
    18,675.40/28,020.60 = 7,582.95/x
  3. Step 3: Cross multiply
    18,675.40x = 28,020.60 × 7,582.95
  4. Step 4: Simplify right side
    18,675.40x = 212,478,850.66
  5. Step 5: Solve for x
    x = 212,478,850.66/18,675.40
  6. Step 6: Final answer
    x = 11,377.47

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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.