Home / 18,768.96-28,135.76-6,448.32

Finding the Fourth Proportional to 18,768.96, 28,135.76 and 6,448.32

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Solution

The fourth proportional to 18,768.96, 28,135.76 and 6,448.32 is: 9,666.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.96 : 28,135.76 = 6,448.32 : x
  2. Step 2: Convert to fraction form
    18,768.96/28,135.76 = 6,448.32/x
  3. Step 3: Cross multiply
    18,768.96x = 28,135.76 × 6,448.32
  4. Step 4: Simplify right side
    18,768.96x = 181,428,383.92
  5. Step 5: Solve for x
    x = 181,428,383.92/18,768.96
  6. Step 6: Final answer
    x = 9,666.41

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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.