Home / 12,474,138.45-18,711,207.69-9,114,906.45

Finding the Fourth Proportional to 12,474,138.45, 18,711,207.69 and 9,114,906.45

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Solution

The fourth proportional to 12,474,138.45, 18,711,207.69 and 9,114,906.45 is: 13,672,359.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474,138.45 : 18,711,207.69 = 9,114,906.45 : x
  2. Step 2: Convert to fraction form
    12,474,138.45/18,711,207.69 = 9,114,906.45/x
  3. Step 3: Cross multiply
    12,474,138.45x = 18,711,207.69 × 9,114,906.45
  4. Step 4: Simplify right side
    12,474,138.45x = 170,550,907,660,870.59
  5. Step 5: Solve for x
    x = 170,550,907,660,870.59/12,474,138.45
  6. Step 6: Final answer
    x = 13,672,359.69

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Similar ratio
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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.