Home / 13,500.40-18,630.39-8,467.57

Finding the Fourth Proportional to 13,500.40, 18,630.39 and 8,467.57

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Solution

The fourth proportional to 13,500.40, 18,630.39 and 8,467.57 is: 11,685.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500.40 : 18,630.39 = 8,467.57 : x
  2. Step 2: Convert to fraction form
    13,500.40/18,630.39 = 8,467.57/x
  3. Step 3: Cross multiply
    13,500.40x = 18,630.39 × 8,467.57
  4. Step 4: Simplify right side
    13,500.40x = 157,753,995.96
  5. Step 5: Solve for x
    x = 157,753,995.96/13,500.40
  6. Step 6: Final answer
    x = 11,685.13

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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.