Home / 18,631.96-27,947.96-4,780.96

Finding the Fourth Proportional to 18,631.96, 27,947.96 and 4,780.96

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Solution

The fourth proportional to 18,631.96, 27,947.96 and 4,780.96 is: 7,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.96 : 27,947.96 = 4,780.96 : x
  2. Step 2: Convert to fraction form
    18,631.96/27,947.96 = 4,780.96/x
  3. Step 3: Cross multiply
    18,631.96x = 27,947.96 × 4,780.96
  4. Step 4: Simplify right side
    18,631.96x = 133,618,078.84
  5. Step 5: Solve for x
    x = 133,618,078.84/18,631.96
  6. Step 6: Final answer
    x = 7,171.45

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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.