Home / 18,936.08-28,401.60-5,086.16

Finding the Fourth Proportional to 18,936.08, 28,401.60 and 5,086.16

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Solution

The fourth proportional to 18,936.08, 28,401.60 and 5,086.16 is: 7,628.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.08 : 28,401.60 = 5,086.16 : x
  2. Step 2: Convert to fraction form
    18,936.08/28,401.60 = 5,086.16/x
  3. Step 3: Cross multiply
    18,936.08x = 28,401.60 × 5,086.16
  4. Step 4: Simplify right side
    18,936.08x = 144,455,081.86
  5. Step 5: Solve for x
    x = 144,455,081.86/18,936.08
  6. Step 6: Final answer
    x = 7,628.56

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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.