Home / 13,179.68-18,181.85-7,587.44

Finding the Fourth Proportional to 13,179.68, 18,181.85 and 7,587.44

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Solution

The fourth proportional to 13,179.68, 18,181.85 and 7,587.44 is: 10,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.68 : 18,181.85 = 7,587.44 : x
  2. Step 2: Convert to fraction form
    13,179.68/18,181.85 = 7,587.44/x
  3. Step 3: Cross multiply
    13,179.68x = 18,181.85 × 7,587.44
  4. Step 4: Simplify right side
    13,179.68x = 137,953,695.96
  5. Step 5: Solve for x
    x = 137,953,695.96/13,179.68
  6. Step 6: Final answer
    x = 10,467.15

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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.