Home / 18,704,980-25,812,872.40-10,120,276

Finding the Fourth Proportional to 18,704,980, 25,812,872.40 and 10,120,276

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Solution

The fourth proportional to 18,704,980, 25,812,872.40 and 10,120,276 is: 13,965,980.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704,980 : 25,812,872.40 = 10,120,276 : x
  2. Step 2: Convert to fraction form
    18,704,980/25,812,872.40 = 10,120,276/x
  3. Step 3: Cross multiply
    18,704,980x = 25,812,872.40 × 10,120,276
  4. Step 4: Simplify right side
    18,704,980x = 261,233,393,040,782.38
  5. Step 5: Solve for x
    x = 261,233,393,040,782.38/18,704,980
  6. Step 6: Final answer
    x = 13,965,980.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.