Home / 11,723.76-16,178.40-7,005.60

Finding the Fourth Proportional to 11,723.76, 16,178.40 and 7,005.60

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Solution

The fourth proportional to 11,723.76, 16,178.40 and 7,005.60 is: 9,667.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,723.76 : 16,178.40 = 7,005.60 : x
  2. Step 2: Convert to fraction form
    11,723.76/16,178.40 = 7,005.60/x
  3. Step 3: Cross multiply
    11,723.76x = 16,178.40 × 7,005.60
  4. Step 4: Simplify right side
    11,723.76x = 113,339,399.04
  5. Step 5: Solve for x
    x = 113,339,399.04/11,723.76
  6. Step 6: Final answer
    x = 9,667.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.