Home / 12,180.05-18,255.89-5,157.73

Finding the Fourth Proportional to 12,180.05, 18,255.89 and 5,157.73

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Solution

The fourth proportional to 12,180.05, 18,255.89 and 5,157.73 is: 7,730.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.05 : 18,255.89 = 5,157.73 : x
  2. Step 2: Convert to fraction form
    12,180.05/18,255.89 = 5,157.73/x
  3. Step 3: Cross multiply
    12,180.05x = 18,255.89 × 5,157.73
  4. Step 4: Simplify right side
    12,180.05x = 94,159,024.08
  5. Step 5: Solve for x
    x = 94,159,024.08/12,180.05
  6. Step 6: Final answer
    x = 7,730.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.