Home / 14,642.89-20,206.37-8,270.78

Finding the Fourth Proportional to 14,642.89, 20,206.37 and 8,270.78

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Solution

The fourth proportional to 14,642.89, 20,206.37 and 8,270.78 is: 11,413.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,642.89 : 20,206.37 = 8,270.78 : x
  2. Step 2: Convert to fraction form
    14,642.89/20,206.37 = 8,270.78/x
  3. Step 3: Cross multiply
    14,642.89x = 20,206.37 × 8,270.78
  4. Step 4: Simplify right side
    14,642.89x = 167,122,440.87
  5. Step 5: Solve for x
    x = 167,122,440.87/14,642.89
  6. Step 6: Final answer
    x = 11,413.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.