Home / 13,145.13-18,137.39-8,896.86

Finding the Fourth Proportional to 13,145.13, 18,137.39 and 8,896.86

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Solution

The fourth proportional to 13,145.13, 18,137.39 and 8,896.86 is: 12,275.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.13 : 18,137.39 = 8,896.86 : x
  2. Step 2: Convert to fraction form
    13,145.13/18,137.39 = 8,896.86/x
  3. Step 3: Cross multiply
    13,145.13x = 18,137.39 × 8,896.86
  4. Step 4: Simplify right side
    13,145.13x = 161,365,775.11
  5. Step 5: Solve for x
    x = 161,365,775.11/13,145.13
  6. Step 6: Final answer
    x = 12,275.71

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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.