Home / 18,771.60-28,137.72-6,288.56

Finding the Fourth Proportional to 18,771.60, 28,137.72 and 6,288.56

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Solution

The fourth proportional to 18,771.60, 28,137.72 and 6,288.56 is: 9,426.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.60 : 28,137.72 = 6,288.56 : x
  2. Step 2: Convert to fraction form
    18,771.60/28,137.72 = 6,288.56/x
  3. Step 3: Cross multiply
    18,771.60x = 28,137.72 × 6,288.56
  4. Step 4: Simplify right side
    18,771.60x = 176,945,740.48
  5. Step 5: Solve for x
    x = 176,945,740.48/18,771.60
  6. Step 6: Final answer
    x = 9,426.25

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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.