Home / 18,786.96-28,178.56-4,935.96

Finding the Fourth Proportional to 18,786.96, 28,178.56 and 4,935.96

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Solution

The fourth proportional to 18,786.96, 28,178.56 and 4,935.96 is: 7,403.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.96 : 28,178.56 = 4,935.96 : x
  2. Step 2: Convert to fraction form
    18,786.96/28,178.56 = 4,935.96/x
  3. Step 3: Cross multiply
    18,786.96x = 28,178.56 × 4,935.96
  4. Step 4: Simplify right side
    18,786.96x = 139,088,245.02
  5. Step 5: Solve for x
    x = 139,088,245.02/18,786.96
  6. Step 6: Final answer
    x = 7,403.45

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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.