Home / 21,339,929.78-29,449,816.87-13,078,395.64

Finding the Fourth Proportional to 21,339,929.78, 29,449,816.87 and 13,078,395.64

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Solution

The fourth proportional to 21,339,929.78, 29,449,816.87 and 13,078,395.64 is: 18,048,623.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339,929.78 : 29,449,816.87 = 13,078,395.64 : x
  2. Step 2: Convert to fraction form
    21,339,929.78/29,449,816.87 = 13,078,395.64/x
  3. Step 3: Cross multiply
    21,339,929.78x = 29,449,816.87 × 13,078,395.64
  4. Step 4: Simplify right side
    21,339,929.78x = 385,156,356,551,406.50
  5. Step 5: Solve for x
    x = 385,156,356,551,406.50/21,339,929.78
  6. Step 6: Final answer
    x = 18,048,623.43

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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.