Home / 13,346.80-18,418.26-7,378.32

Finding the Fourth Proportional to 13,346.80, 18,418.26 and 7,378.32

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Solution

The fourth proportional to 13,346.80, 18,418.26 and 7,378.32 is: 10,181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,346.80 : 18,418.26 = 7,378.32 : x
  2. Step 2: Convert to fraction form
    13,346.80/18,418.26 = 7,378.32/x
  3. Step 3: Cross multiply
    13,346.80x = 18,418.26 × 7,378.32
  4. Step 4: Simplify right side
    13,346.80x = 135,895,816.12
  5. Step 5: Solve for x
    x = 135,895,816.12/13,346.80
  6. Step 6: Final answer
    x = 10,181.90

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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.