Home / 20,736,085.40-31,104,128.10-12,673,928.60

Finding the Fourth Proportional to 20,736,085.40, 31,104,128.10 and 12,673,928.60

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Solution

The fourth proportional to 20,736,085.40, 31,104,128.10 and 12,673,928.60 is: 19,010,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,085.40 : 31,104,128.10 = 12,673,928.60 : x
  2. Step 2: Convert to fraction form
    20,736,085.40/31,104,128.10 = 12,673,928.60/x
  3. Step 3: Cross multiply
    20,736,085.40x = 31,104,128.10 × 12,673,928.60
  4. Step 4: Simplify right side
    20,736,085.40x = 394,211,498,704,653.69
  5. Step 5: Solve for x
    x = 394,211,498,704,653.69/20,736,085.40
  6. Step 6: Final answer
    x = 19,010,892.90

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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.