Home / 21,146,242.80-31,727,658.60-7,684,431.60

Finding the Fourth Proportional to 21,146,242.80, 31,727,658.60 and 7,684,431.60

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Solution

The fourth proportional to 21,146,242.80, 31,727,658.60 and 7,684,431.60 is: 11,529,661.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146,242.80 : 31,727,658.60 = 7,684,431.60 : x
  2. Step 2: Convert to fraction form
    21,146,242.80/31,727,658.60 = 7,684,431.60/x
  3. Step 3: Cross multiply
    21,146,242.80x = 31,727,658.60 × 7,684,431.60
  4. Step 4: Simplify right side
    21,146,242.80x = 243,809,022,339,851.75
  5. Step 5: Solve for x
    x = 243,809,022,339,851.75/21,146,242.80
  6. Step 6: Final answer
    x = 11,529,661.54

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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.