Home / 18,723.78-28,076.27-6,239.43

Finding the Fourth Proportional to 18,723.78, 28,076.27 and 6,239.43

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Solution

The fourth proportional to 18,723.78, 28,076.27 and 6,239.43 is: 9,356.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.78 : 28,076.27 = 6,239.43 : x
  2. Step 2: Convert to fraction form
    18,723.78/28,076.27 = 6,239.43/x
  3. Step 3: Cross multiply
    18,723.78x = 28,076.27 × 6,239.43
  4. Step 4: Simplify right side
    18,723.78x = 175,179,890.13
  5. Step 5: Solve for x
    x = 175,179,890.13/18,723.78
  6. Step 6: Final answer
    x = 9,356.01

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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.