Home / 13,113.44-18,096.64-7,145.28

Finding the Fourth Proportional to 13,113.44, 18,096.64 and 7,145.28

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Solution

The fourth proportional to 13,113.44, 18,096.64 and 7,145.28 is: 9,860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.44 : 18,096.64 = 7,145.28 : x
  2. Step 2: Convert to fraction form
    13,113.44/18,096.64 = 7,145.28/x
  3. Step 3: Cross multiply
    13,113.44x = 18,096.64 × 7,145.28
  4. Step 4: Simplify right side
    13,113.44x = 129,305,559.86
  5. Step 5: Solve for x
    x = 129,305,559.86/13,113.44
  6. Step 6: Final answer
    x = 9,860.54

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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.