Home / 18,122.88-27,178.80-6,435.36

Finding the Fourth Proportional to 18,122.88, 27,178.80 and 6,435.36

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Solution

The fourth proportional to 18,122.88, 27,178.80 and 6,435.36 is: 9,651.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.88 : 27,178.80 = 6,435.36 : x
  2. Step 2: Convert to fraction form
    18,122.88/27,178.80 = 6,435.36/x
  3. Step 3: Cross multiply
    18,122.88x = 27,178.80 × 6,435.36
  4. Step 4: Simplify right side
    18,122.88x = 174,905,362.37
  5. Step 5: Solve for x
    x = 174,905,362.37/18,122.88
  6. Step 6: Final answer
    x = 9,651.08

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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.