Home / 13,442.24-18,559.52-8,408.64

Finding the Fourth Proportional to 13,442.24, 18,559.52 and 8,408.64

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Solution

The fourth proportional to 13,442.24, 18,559.52 and 8,408.64 is: 11,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.24 : 18,559.52 = 8,408.64 : x
  2. Step 2: Convert to fraction form
    13,442.24/18,559.52 = 8,408.64/x
  3. Step 3: Cross multiply
    13,442.24x = 18,559.52 × 8,408.64
  4. Step 4: Simplify right side
    13,442.24x = 156,060,322.25
  5. Step 5: Solve for x
    x = 156,060,322.25/13,442.24
  6. Step 6: Final answer
    x = 11,609.70

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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.