Home / 18,145,429.80-27,218,144.70-11,720,898.60

Finding the Fourth Proportional to 18,145,429.80, 27,218,144.70 and 11,720,898.60

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Solution

The fourth proportional to 18,145,429.80, 27,218,144.70 and 11,720,898.60 is: 17,581,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145,429.80 : 27,218,144.70 = 11,720,898.60 : x
  2. Step 2: Convert to fraction form
    18,145,429.80/27,218,144.70 = 11,720,898.60/x
  3. Step 3: Cross multiply
    18,145,429.80x = 27,218,144.70 × 11,720,898.60
  4. Step 4: Simplify right side
    18,145,429.80x = 319,021,114,108,827.38
  5. Step 5: Solve for x
    x = 319,021,114,108,827.38/18,145,429.80
  6. Step 6: Final answer
    x = 17,581,347.90

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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.