Home / 12,457,902.30-18,686,853.45-12,289,940.70

Finding the Fourth Proportional to 12,457,902.30, 18,686,853.45 and 12,289,940.70

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Solution

The fourth proportional to 12,457,902.30, 18,686,853.45 and 12,289,940.70 is: 18,434,911.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,902.30 : 18,686,853.45 = 12,289,940.70 : x
  2. Step 2: Convert to fraction form
    12,457,902.30/18,686,853.45 = 12,289,940.70/x
  3. Step 3: Cross multiply
    12,457,902.30x = 18,686,853.45 × 12,289,940.70
  4. Step 4: Simplify right side
    12,457,902.30x = 229,660,320,770,090.41
  5. Step 5: Solve for x
    x = 229,660,320,770,090.41/12,457,902.30
  6. Step 6: Final answer
    x = 18,434,911.05

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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.