Home / 21,751.66-30,016.24-12,190.38

Finding the Fourth Proportional to 21,751.66, 30,016.24 and 12,190.38

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Solution

The fourth proportional to 21,751.66, 30,016.24 and 12,190.38 is: 16,822.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.66 : 30,016.24 = 12,190.38 : x
  2. Step 2: Convert to fraction form
    21,751.66/30,016.24 = 12,190.38/x
  3. Step 3: Cross multiply
    21,751.66x = 30,016.24 × 12,190.38
  4. Step 4: Simplify right side
    21,751.66x = 365,909,371.77
  5. Step 5: Solve for x
    x = 365,909,371.77/21,751.66
  6. Step 6: Final answer
    x = 16,822.14

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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.