Home / 11,479,218.98-15,840,724.32-7,128,211.86

Finding the Fourth Proportional to 11,479,218.98, 15,840,724.32 and 7,128,211.86

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Solution

The fourth proportional to 11,479,218.98, 15,840,724.32 and 7,128,211.86 is: 9,836,561.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479,218.98 : 15,840,724.32 = 7,128,211.86 : x
  2. Step 2: Convert to fraction form
    11,479,218.98/15,840,724.32 = 7,128,211.86/x
  3. Step 3: Cross multiply
    11,479,218.98x = 15,840,724.32 × 7,128,211.86
  4. Step 4: Simplify right side
    11,479,218.98x = 112,916,038,968,814.44
  5. Step 5: Solve for x
    x = 112,916,038,968,814.44/11,479,218.98
  6. Step 6: Final answer
    x = 9,836,561.11

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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.