Home / 13,120.08-18,102.60-7,454.94

Finding the Fourth Proportional to 13,120.08, 18,102.60 and 7,454.94

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Solution

The fourth proportional to 13,120.08, 18,102.60 and 7,454.94 is: 10,286.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.08 : 18,102.60 = 7,454.94 : x
  2. Step 2: Convert to fraction form
    13,120.08/18,102.60 = 7,454.94/x
  3. Step 3: Cross multiply
    13,120.08x = 18,102.60 × 7,454.94
  4. Step 4: Simplify right side
    13,120.08x = 134,953,796.84
  5. Step 5: Solve for x
    x = 134,953,796.84/13,120.08
  6. Step 6: Final answer
    x = 10,286.05

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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.