Home / 13,728,405.79-18,940,507.41-7,843,817.67

Finding the Fourth Proportional to 13,728,405.79, 18,940,507.41 and 7,843,817.67

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Solution

The fourth proportional to 13,728,405.79, 18,940,507.41 and 7,843,817.67 is: 10,821,787.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728,405.79 : 18,940,507.41 = 7,843,817.67 : x
  2. Step 2: Convert to fraction form
    13,728,405.79/18,940,507.41 = 7,843,817.67/x
  3. Step 3: Cross multiply
    13,728,405.79x = 18,940,507.41 × 7,843,817.67
  4. Step 4: Simplify right side
    13,728,405.79x = 148,565,886,701,323.94
  5. Step 5: Solve for x
    x = 148,565,886,701,323.94/13,728,405.79
  6. Step 6: Final answer
    x = 10,821,787.25

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1.5x scale

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.