Home / 12,942.20-19,413.30-12,337.40

Finding the Fourth Proportional to 12,942.20, 19,413.30 and 12,337.40

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Solution

The fourth proportional to 12,942.20, 19,413.30 and 12,337.40 is: 18,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.20 : 19,413.30 = 12,337.40 : x
  2. Step 2: Convert to fraction form
    12,942.20/19,413.30 = 12,337.40/x
  3. Step 3: Cross multiply
    12,942.20x = 19,413.30 × 12,337.40
  4. Step 4: Simplify right side
    12,942.20x = 239,509,647.42
  5. Step 5: Solve for x
    x = 239,509,647.42/12,942.20
  6. Step 6: Final answer
    x = 18,506.10

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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.