Home / 15,516.96-21,413.12-8,617.88

Finding the Fourth Proportional to 15,516.96, 21,413.12 and 8,617.88

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Solution

The fourth proportional to 15,516.96, 21,413.12 and 8,617.88 is: 11,892.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.96 : 21,413.12 = 8,617.88 : x
  2. Step 2: Convert to fraction form
    15,516.96/21,413.12 = 8,617.88/x
  3. Step 3: Cross multiply
    15,516.96x = 21,413.12 × 8,617.88
  4. Step 4: Simplify right side
    15,516.96x = 184,535,709.03
  5. Step 5: Solve for x
    x = 184,535,709.03/15,516.96
  6. Step 6: Final answer
    x = 11,892.52

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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.