Home / 18,187.39-27,280.96-4,678.54

Finding the Fourth Proportional to 18,187.39, 27,280.96 and 4,678.54

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Solution

The fourth proportional to 18,187.39, 27,280.96 and 4,678.54 is: 7,017.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.39 : 27,280.96 = 4,678.54 : x
  2. Step 2: Convert to fraction form
    18,187.39/27,280.96 = 4,678.54/x
  3. Step 3: Cross multiply
    18,187.39x = 27,280.96 × 4,678.54
  4. Step 4: Simplify right side
    18,187.39x = 127,635,062.60
  5. Step 5: Solve for x
    x = 127,635,062.60/18,187.39
  6. Step 6: Final answer
    x = 7,017.78

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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.