Home / 20,952.43-28,906.11-11,995.11

Finding the Fourth Proportional to 20,952.43, 28,906.11 and 11,995.11

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Solution

The fourth proportional to 20,952.43, 28,906.11 and 11,995.11 is: 16,548.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.43 : 28,906.11 = 11,995.11 : x
  2. Step 2: Convert to fraction form
    20,952.43/28,906.11 = 11,995.11/x
  3. Step 3: Cross multiply
    20,952.43x = 28,906.11 × 11,995.11
  4. Step 4: Simplify right side
    20,952.43x = 346,731,969.12
  5. Step 5: Solve for x
    x = 346,731,969.12/20,952.43
  6. Step 6: Final answer
    x = 16,548.53

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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.