Home / 28,383.35-42,579.68-9,661.46

Finding the Fourth Proportional to 28,383.35, 42,579.68 and 9,661.46

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Solution

The fourth proportional to 28,383.35, 42,579.68 and 9,661.46 is: 14,493.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.35 : 42,579.68 = 9,661.46 : x
  2. Step 2: Convert to fraction form
    28,383.35/42,579.68 = 9,661.46/x
  3. Step 3: Cross multiply
    28,383.35x = 42,579.68 × 9,661.46
  4. Step 4: Simplify right side
    28,383.35x = 411,381,613.93
  5. Step 5: Solve for x
    x = 411,381,613.93/28,383.35
  6. Step 6: Final answer
    x = 14,493.77

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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.