Home / 18,140.10-27,210.33-11,939.46

Finding the Fourth Proportional to 18,140.10, 27,210.33 and 11,939.46

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Solution

The fourth proportional to 18,140.10, 27,210.33 and 11,939.46 is: 17,909.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.10 : 27,210.33 = 11,939.46 : x
  2. Step 2: Convert to fraction form
    18,140.10/27,210.33 = 11,939.46/x
  3. Step 3: Cross multiply
    18,140.10x = 27,210.33 × 11,939.46
  4. Step 4: Simplify right side
    18,140.10x = 324,876,646.62
  5. Step 5: Solve for x
    x = 324,876,646.62/18,140.10
  6. Step 6: Final answer
    x = 17,909.31

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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.