Home / 13,118.21-18,103.53-7,150.27

Finding the Fourth Proportional to 13,118.21, 18,103.53 and 7,150.27

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Solution

The fourth proportional to 13,118.21, 18,103.53 and 7,150.27 is: 9,867.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.21 : 18,103.53 = 7,150.27 : x
  2. Step 2: Convert to fraction form
    13,118.21/18,103.53 = 7,150.27/x
  3. Step 3: Cross multiply
    13,118.21x = 18,103.53 × 7,150.27
  4. Step 4: Simplify right side
    13,118.21x = 129,445,082.19
  5. Step 5: Solve for x
    x = 129,445,082.19/13,118.21
  6. Step 6: Final answer
    x = 9,867.59

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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.