Home / 20,898.06-28,839.32-11,945.75

Finding the Fourth Proportional to 20,898.06, 28,839.32 and 11,945.75

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Solution

The fourth proportional to 20,898.06, 28,839.32 and 11,945.75 is: 16,485.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.06 : 28,839.32 = 11,945.75 : x
  2. Step 2: Convert to fraction form
    20,898.06/28,839.32 = 11,945.75/x
  3. Step 3: Cross multiply
    20,898.06x = 28,839.32 × 11,945.75
  4. Step 4: Simplify right side
    20,898.06x = 344,507,276.38
  5. Step 5: Solve for x
    x = 344,507,276.38/20,898.06
  6. Step 6: Final answer
    x = 16,485.13

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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.