Home / 13,347.39-18,419.60-7,378.94

Finding the Fourth Proportional to 13,347.39, 18,419.60 and 7,378.94

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Solution

The fourth proportional to 13,347.39, 18,419.60 and 7,378.94 is: 10,183.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.39 : 18,419.60 = 7,378.94 : x
  2. Step 2: Convert to fraction form
    13,347.39/18,419.60 = 7,378.94/x
  3. Step 3: Cross multiply
    13,347.39x = 18,419.60 × 7,378.94
  4. Step 4: Simplify right side
    13,347.39x = 135,917,187.72
  5. Step 5: Solve for x
    x = 135,917,187.72/13,347.39
  6. Step 6: Final answer
    x = 10,183.05

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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.