Home / 11,157.86-15,397.34-6,121.96

Finding the Fourth Proportional to 11,157.86, 15,397.34 and 6,121.96

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Solution

The fourth proportional to 11,157.86, 15,397.34 and 6,121.96 is: 8,448.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.86 : 15,397.34 = 6,121.96 : x
  2. Step 2: Convert to fraction form
    11,157.86/15,397.34 = 6,121.96/x
  3. Step 3: Cross multiply
    11,157.86x = 15,397.34 × 6,121.96
  4. Step 4: Simplify right side
    11,157.86x = 94,261,830.48
  5. Step 5: Solve for x
    x = 94,261,830.48/11,157.86
  6. Step 6: Final answer
    x = 8,448.02

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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.