Home / 18,943.78-28,395.85-6,459.43

Finding the Fourth Proportional to 18,943.78, 28,395.85 and 6,459.43

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Solution

The fourth proportional to 18,943.78, 28,395.85 and 6,459.43 is: 9,682.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.78 : 28,395.85 = 6,459.43 : x
  2. Step 2: Convert to fraction form
    18,943.78/28,395.85 = 6,459.43/x
  3. Step 3: Cross multiply
    18,943.78x = 28,395.85 × 6,459.43
  4. Step 4: Simplify right side
    18,943.78x = 183,421,005.37
  5. Step 5: Solve for x
    x = 183,421,005.37/18,943.78
  6. Step 6: Final answer
    x = 9,682.39

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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.