Home / 11,985.15-16,539.80-6,679.83

Finding the Fourth Proportional to 11,985.15, 16,539.80 and 6,679.83

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Solution

The fourth proportional to 11,985.15, 16,539.80 and 6,679.83 is: 9,218.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.15 : 16,539.80 = 6,679.83 : x
  2. Step 2: Convert to fraction form
    11,985.15/16,539.80 = 6,679.83/x
  3. Step 3: Cross multiply
    11,985.15x = 16,539.80 × 6,679.83
  4. Step 4: Simplify right side
    11,985.15x = 110,483,018.83
  5. Step 5: Solve for x
    x = 110,483,018.83/11,985.15
  6. Step 6: Final answer
    x = 9,218.33

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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.