Home / 20,760,239.80-31,140,359.70-12,115,466.20

Finding the Fourth Proportional to 20,760,239.80, 31,140,359.70 and 12,115,466.20

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Solution

The fourth proportional to 20,760,239.80, 31,140,359.70 and 12,115,466.20 is: 18,173,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760,239.80 : 31,140,359.70 = 12,115,466.20 : x
  2. Step 2: Convert to fraction form
    20,760,239.80/31,140,359.70 = 12,115,466.20/x
  3. Step 3: Cross multiply
    20,760,239.80x = 31,140,359.70 × 12,115,466.20
  4. Step 4: Simplify right side
    20,760,239.80x = 377,279,975,401,192.12
  5. Step 5: Solve for x
    x = 377,279,975,401,192.12/20,760,239.80
  6. Step 6: Final answer
    x = 18,173,199.30

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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.