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Finding the Fourth Proportional to 12,604,811.40, 18,907,217.10 and 12,394,859.40

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Solution

The fourth proportional to 12,604,811.40, 18,907,217.10 and 12,394,859.40 is: 18,592,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,604,811.40 : 18,907,217.10 = 12,394,859.40 : x
  2. Step 2: Convert to fraction form
    12,604,811.40/18,907,217.10 = 12,394,859.40/x
  3. Step 3: Cross multiply
    12,604,811.40x = 18,907,217.10 × 12,394,859.40
  4. Step 4: Simplify right side
    12,604,811.40x = 234,352,297,599,775.75
  5. Step 5: Solve for x
    x = 234,352,297,599,775.75/12,604,811.40
  6. Step 6: Final answer
    x = 18,592,289.10

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1.5x scale

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.