Home / 13,216.36-18,236.74-7,909.96

Finding the Fourth Proportional to 13,216.36, 18,236.74 and 7,909.96

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Solution

The fourth proportional to 13,216.36, 18,236.74 and 7,909.96 is: 10,914.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.36 : 18,236.74 = 7,909.96 : x
  2. Step 2: Convert to fraction form
    13,216.36/18,236.74 = 7,909.96/x
  3. Step 3: Cross multiply
    13,216.36x = 18,236.74 × 7,909.96
  4. Step 4: Simplify right side
    13,216.36x = 144,251,883.93
  5. Step 5: Solve for x
    x = 144,251,883.93/13,216.36
  6. Step 6: Final answer
    x = 10,914.65

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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.