Home / 18,748.62-28,122.93-12,942.14

Finding the Fourth Proportional to 18,748.62, 28,122.93 and 12,942.14

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Solution

The fourth proportional to 18,748.62, 28,122.93 and 12,942.14 is: 19,413.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.62 : 28,122.93 = 12,942.14 : x
  2. Step 2: Convert to fraction form
    18,748.62/28,122.93 = 12,942.14/x
  3. Step 3: Cross multiply
    18,748.62x = 28,122.93 × 12,942.14
  4. Step 4: Simplify right side
    18,748.62x = 363,970,756.66
  5. Step 5: Solve for x
    x = 363,970,756.66/18,748.62
  6. Step 6: Final answer
    x = 19,413.20

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1.5x scale

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.