Home / 11,723.28-16,178.28-6,418.32

Finding the Fourth Proportional to 11,723.28, 16,178.28 and 6,418.32

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Solution

The fourth proportional to 11,723.28, 16,178.28 and 6,418.32 is: 8,857.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,723.28 : 16,178.28 = 6,418.32 : x
  2. Step 2: Convert to fraction form
    11,723.28/16,178.28 = 6,418.32/x
  3. Step 3: Cross multiply
    11,723.28x = 16,178.28 × 6,418.32
  4. Step 4: Simplify right side
    11,723.28x = 103,837,378.09
  5. Step 5: Solve for x
    x = 103,837,378.09/11,723.28
  6. Step 6: Final answer
    x = 8,857.37

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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.