Home / 13,126.66-18,114.86-8,413.68

Finding the Fourth Proportional to 13,126.66, 18,114.86 and 8,413.68

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Solution

The fourth proportional to 13,126.66, 18,114.86 and 8,413.68 is: 11,610.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.66 : 18,114.86 = 8,413.68 : x
  2. Step 2: Convert to fraction form
    13,126.66/18,114.86 = 8,413.68/x
  3. Step 3: Cross multiply
    13,126.66x = 18,114.86 × 8,413.68
  4. Step 4: Simplify right side
    13,126.66x = 152,412,635.28
  5. Step 5: Solve for x
    x = 152,412,635.28/13,126.66
  6. Step 6: Final answer
    x = 11,610.92

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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.