Home / 12,128,002.30-18,192,003.45-7,823,330.20

Finding the Fourth Proportional to 12,128,002.30, 18,192,003.45 and 7,823,330.20

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Solution

The fourth proportional to 12,128,002.30, 18,192,003.45 and 7,823,330.20 is: 11,734,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,002.30 : 18,192,003.45 = 7,823,330.20 : x
  2. Step 2: Convert to fraction form
    12,128,002.30/18,192,003.45 = 7,823,330.20/x
  3. Step 3: Cross multiply
    12,128,002.30x = 18,192,003.45 × 7,823,330.20
  4. Step 4: Simplify right side
    12,128,002.30x = 142,322,049,988,889.19
  5. Step 5: Solve for x
    x = 142,322,049,988,889.19/12,128,002.30
  6. Step 6: Final answer
    x = 11,734,995.30

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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.