Home / 11,776.86-17,666.37-3,985.74

Finding the Fourth Proportional to 11,776.86, 17,666.37 and 3,985.74

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Solution

The fourth proportional to 11,776.86, 17,666.37 and 3,985.74 is: 5,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,776.86 : 17,666.37 = 3,985.74 : x
  2. Step 2: Convert to fraction form
    11,776.86/17,666.37 = 3,985.74/x
  3. Step 3: Cross multiply
    11,776.86x = 17,666.37 × 3,985.74
  4. Step 4: Simplify right side
    11,776.86x = 70,413,557.56
  5. Step 5: Solve for x
    x = 70,413,557.56/11,776.86
  6. Step 6: Final answer
    x = 5,978.98

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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.