Home / 20,760,134.67-31,146,865.08-9,978,217.38

Finding the Fourth Proportional to 20,760,134.67, 31,146,865.08 and 9,978,217.38

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Solution

The fourth proportional to 20,760,134.67, 31,146,865.08 and 9,978,217.38 is: 14,970,528.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760,134.67 : 31,146,865.08 = 9,978,217.38 : x
  2. Step 2: Convert to fraction form
    20,760,134.67/31,146,865.08 = 9,978,217.38/x
  3. Step 3: Cross multiply
    20,760,134.67x = 31,146,865.08 × 9,978,217.38
  4. Step 4: Simplify right side
    20,760,134.67x = 310,790,190,473,771.12
  5. Step 5: Solve for x
    x = 310,790,190,473,771.12/20,760,134.67
  6. Step 6: Final answer
    x = 14,970,528.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.