Home / 13,290.82-18,340.58-7,321.32

Finding the Fourth Proportional to 13,290.82, 18,340.58 and 7,321.32

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Solution

The fourth proportional to 13,290.82, 18,340.58 and 7,321.32 is: 10,103.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.82 : 18,340.58 = 7,321.32 : x
  2. Step 2: Convert to fraction form
    13,290.82/18,340.58 = 7,321.32/x
  3. Step 3: Cross multiply
    13,290.82x = 18,340.58 × 7,321.32
  4. Step 4: Simplify right side
    13,290.82x = 134,277,273.47
  5. Step 5: Solve for x
    x = 134,277,273.47/13,290.82
  6. Step 6: Final answer
    x = 10,103.01

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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.