Home / 12,928,049.80-19,354,749.90-7,889,201.80

Finding the Fourth Proportional to 12,928,049.80, 19,354,749.90 and 7,889,201.80

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Solution

The fourth proportional to 12,928,049.80, 19,354,749.90 and 7,889,201.80 is: 11,811,025.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928,049.80 : 19,354,749.90 = 7,889,201.80 : x
  2. Step 2: Convert to fraction form
    12,928,049.80/19,354,749.90 = 7,889,201.80/x
  3. Step 3: Cross multiply
    12,928,049.80x = 19,354,749.90 × 7,889,201.80
  4. Step 4: Simplify right side
    12,928,049.80x = 152,693,527,749,629.81
  5. Step 5: Solve for x
    x = 152,693,527,749,629.81/12,928,049.80
  6. Step 6: Final answer
    x = 11,811,025.65

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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.