Home / 18,122.54-27,178.88-4,971.80

Finding the Fourth Proportional to 18,122.54, 27,178.88 and 4,971.80

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Solution

The fourth proportional to 18,122.54, 27,178.88 and 4,971.80 is: 7,456.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.54 : 27,178.88 = 4,971.80 : x
  2. Step 2: Convert to fraction form
    18,122.54/27,178.88 = 4,971.80/x
  3. Step 3: Cross multiply
    18,122.54x = 27,178.88 × 4,971.80
  4. Step 4: Simplify right side
    18,122.54x = 135,127,955.58
  5. Step 5: Solve for x
    x = 135,127,955.58/18,122.54
  6. Step 6: Final answer
    x = 7,456.35

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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.