Home / 21,295,021.25-29,387,129.34-12,128,516.93

Finding the Fourth Proportional to 21,295,021.25, 29,387,129.34 and 12,128,516.93

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Solution

The fourth proportional to 21,295,021.25, 29,387,129.34 and 12,128,516.93 is: 16,737,353.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295,021.25 : 29,387,129.34 = 12,128,516.93 : x
  2. Step 2: Convert to fraction form
    21,295,021.25/29,387,129.34 = 12,128,516.93/x
  3. Step 3: Cross multiply
    21,295,021.25x = 29,387,129.34 × 12,128,516.93
  4. Step 4: Simplify right side
    21,295,021.25x = 356,422,295,724,289.69
  5. Step 5: Solve for x
    x = 356,422,295,724,289.69/21,295,021.25
  6. Step 6: Final answer
    x = 16,737,353.37

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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.