Home / 11,109.45-16,666.80-3,318.46

Finding the Fourth Proportional to 11,109.45, 16,666.80 and 3,318.46

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Solution

The fourth proportional to 11,109.45, 16,666.80 and 3,318.46 is: 4,978.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.45 : 16,666.80 = 3,318.46 : x
  2. Step 2: Convert to fraction form
    11,109.45/16,666.80 = 3,318.46/x
  3. Step 3: Cross multiply
    11,109.45x = 16,666.80 × 3,318.46
  4. Step 4: Simplify right side
    11,109.45x = 55,308,109.13
  5. Step 5: Solve for x
    x = 55,308,109.13/11,109.45
  6. Step 6: Final answer
    x = 4,978.47

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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.