Home / 18,420.62-27,607.83-7,878.26

Finding the Fourth Proportional to 18,420.62, 27,607.83 and 7,878.26

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Solution

The fourth proportional to 18,420.62, 27,607.83 and 7,878.26 is: 11,807.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.62 : 27,607.83 = 7,878.26 : x
  2. Step 2: Convert to fraction form
    18,420.62/27,607.83 = 7,878.26/x
  3. Step 3: Cross multiply
    18,420.62x = 27,607.83 × 7,878.26
  4. Step 4: Simplify right side
    18,420.62x = 217,501,662.78
  5. Step 5: Solve for x
    x = 217,501,662.78/18,420.62
  6. Step 6: Final answer
    x = 11,807.51

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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.