Home / 12,750.37-19,128.26-3,985.95

Finding the Fourth Proportional to 12,750.37, 19,128.26 and 3,985.95

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Solution

The fourth proportional to 12,750.37, 19,128.26 and 3,985.95 is: 5,979.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.37 : 19,128.26 = 3,985.95 : x
  2. Step 2: Convert to fraction form
    12,750.37/19,128.26 = 3,985.95/x
  3. Step 3: Cross multiply
    12,750.37x = 19,128.26 × 3,985.95
  4. Step 4: Simplify right side
    12,750.37x = 76,244,172.38
  5. Step 5: Solve for x
    x = 76,244,172.38/12,750.37
  6. Step 6: Final answer
    x = 5,979.76

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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.