Home / 13,275.38-18,321.84-8,558.75

Finding the Fourth Proportional to 13,275.38, 18,321.84 and 8,558.75

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Solution

The fourth proportional to 13,275.38, 18,321.84 and 8,558.75 is: 11,812.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.38 : 18,321.84 = 8,558.75 : x
  2. Step 2: Convert to fraction form
    13,275.38/18,321.84 = 8,558.75/x
  3. Step 3: Cross multiply
    13,275.38x = 18,321.84 × 8,558.75
  4. Step 4: Simplify right side
    13,275.38x = 156,811,956.49
  5. Step 5: Solve for x
    x = 156,811,956.49/13,275.38
  6. Step 6: Final answer
    x = 11,812.24

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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.