Home / 13,157.64-18,150.78-8,908.86

Finding the Fourth Proportional to 13,157.64, 18,150.78 and 8,908.86

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Solution

The fourth proportional to 13,157.64, 18,150.78 and 8,908.86 is: 12,289.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.64 : 18,150.78 = 8,908.86 : x
  2. Step 2: Convert to fraction form
    13,157.64/18,150.78 = 8,908.86/x
  3. Step 3: Cross multiply
    13,157.64x = 18,150.78 × 8,908.86
  4. Step 4: Simplify right side
    13,157.64x = 161,702,757.91
  5. Step 5: Solve for x
    x = 161,702,757.91/13,157.64
  6. Step 6: Final answer
    x = 12,289.65

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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.