Home / 13,313.68-18,369.56-9,770.64

Finding the Fourth Proportional to 13,313.68, 18,369.56 and 9,770.64

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Solution

The fourth proportional to 13,313.68, 18,369.56 and 9,770.64 is: 13,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.68 : 18,369.56 = 9,770.64 : x
  2. Step 2: Convert to fraction form
    13,313.68/18,369.56 = 9,770.64/x
  3. Step 3: Cross multiply
    13,313.68x = 18,369.56 × 9,770.64
  4. Step 4: Simplify right side
    13,313.68x = 179,482,357.72
  5. Step 5: Solve for x
    x = 179,482,357.72/13,313.68
  6. Step 6: Final answer
    x = 13,481.05

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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.