Home / 13,245.53-18,275.12-8,209.96

Finding the Fourth Proportional to 13,245.53, 18,275.12 and 8,209.96

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Solution

The fourth proportional to 13,245.53, 18,275.12 and 8,209.96 is: 11,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.53 : 18,275.12 = 8,209.96 : x
  2. Step 2: Convert to fraction form
    13,245.53/18,275.12 = 8,209.96/x
  3. Step 3: Cross multiply
    13,245.53x = 18,275.12 × 8,209.96
  4. Step 4: Simplify right side
    13,245.53x = 150,037,948.24
  5. Step 5: Solve for x
    x = 150,037,948.24/13,245.53
  6. Step 6: Final answer
    x = 11,327.44

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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.