Home / 13,291.06-18,340.93-7,321.56

Finding the Fourth Proportional to 13,291.06, 18,340.93 and 7,321.56

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Solution

The fourth proportional to 13,291.06, 18,340.93 and 7,321.56 is: 10,103.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.06 : 18,340.93 = 7,321.56 : x
  2. Step 2: Convert to fraction form
    13,291.06/18,340.93 = 7,321.56/x
  3. Step 3: Cross multiply
    13,291.06x = 18,340.93 × 7,321.56
  4. Step 4: Simplify right side
    13,291.06x = 134,284,219.45
  5. Step 5: Solve for x
    x = 134,284,219.45/13,291.06
  6. Step 6: Final answer
    x = 10,103.35

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Similar ratio
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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.