Home / 20,956,939.80-31,435,409.70-18,437,515.80

Finding the Fourth Proportional to 20,956,939.80, 31,435,409.70 and 18,437,515.80

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Solution

The fourth proportional to 20,956,939.80, 31,435,409.70 and 18,437,515.80 is: 27,656,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,939.80 : 31,435,409.70 = 18,437,515.80 : x
  2. Step 2: Convert to fraction form
    20,956,939.80/31,435,409.70 = 18,437,515.80/x
  3. Step 3: Cross multiply
    20,956,939.80x = 31,435,409.70 × 18,437,515.80
  4. Step 4: Simplify right side
    20,956,939.80x = 579,590,863,023,223.25
  5. Step 5: Solve for x
    x = 579,590,863,023,223.25/20,956,939.80
  6. Step 6: Final answer
    x = 27,656,273.70

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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.