Home / 11,112.64-16,667.68-2,905.28

Finding the Fourth Proportional to 11,112.64, 16,667.68 and 2,905.28

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Solution

The fourth proportional to 11,112.64, 16,667.68 and 2,905.28 is: 4,357.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.64 : 16,667.68 = 2,905.28 : x
  2. Step 2: Convert to fraction form
    11,112.64/16,667.68 = 2,905.28/x
  3. Step 3: Cross multiply
    11,112.64x = 16,667.68 × 2,905.28
  4. Step 4: Simplify right side
    11,112.64x = 48,424,277.35
  5. Step 5: Solve for x
    x = 48,424,277.35/11,112.64
  6. Step 6: Final answer
    x = 4,357.59

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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.