Home / 28,289.58-42,372.03-18,885.54

Finding the Fourth Proportional to 28,289.58, 42,372.03 and 18,885.54

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Solution

The fourth proportional to 28,289.58, 42,372.03 and 18,885.54 is: 28,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.58 : 42,372.03 = 18,885.54 : x
  2. Step 2: Convert to fraction form
    28,289.58/42,372.03 = 18,885.54/x
  3. Step 3: Cross multiply
    28,289.58x = 42,372.03 × 18,885.54
  4. Step 4: Simplify right side
    28,289.58x = 800,218,667.45
  5. Step 5: Solve for x
    x = 800,218,667.45/28,289.58
  6. Step 6: Final answer
    x = 28,286.69

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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.