Home / 12,138,147.20-18,212,469.60-6,154,515.20

Finding the Fourth Proportional to 12,138,147.20, 18,212,469.60 and 6,154,515.20

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Solution

The fourth proportional to 12,138,147.20, 18,212,469.60 and 6,154,515.20 is: 9,234,434.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138,147.20 : 18,212,469.60 = 6,154,515.20 : x
  2. Step 2: Convert to fraction form
    12,138,147.20/18,212,469.60 = 6,154,515.20/x
  3. Step 3: Cross multiply
    12,138,147.20x = 18,212,469.60 × 6,154,515.20
  4. Step 4: Simplify right side
    12,138,147.20x = 112,088,920,982,737.94
  5. Step 5: Solve for x
    x = 112,088,920,982,737.94/12,138,147.20
  6. Step 6: Final answer
    x = 9,234,434.15

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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.