Home / 18,801.72-28,206.30-8,413.56

Finding the Fourth Proportional to 18,801.72, 28,206.30 and 8,413.56

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Solution

The fourth proportional to 18,801.72, 28,206.30 and 8,413.56 is: 12,622.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.72 : 28,206.30 = 8,413.56 : x
  2. Step 2: Convert to fraction form
    18,801.72/28,206.30 = 8,413.56/x
  3. Step 3: Cross multiply
    18,801.72x = 28,206.30 × 8,413.56
  4. Step 4: Simplify right side
    18,801.72x = 237,315,397.43
  5. Step 5: Solve for x
    x = 237,315,397.43/18,801.72
  6. Step 6: Final answer
    x = 12,622.00

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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.