Home / 20,246.40-27,921.83-12,693.56

Finding the Fourth Proportional to 20,246.40, 27,921.83 and 12,693.56

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Solution

The fourth proportional to 20,246.40, 27,921.83 and 12,693.56 is: 17,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.40 : 27,921.83 = 12,693.56 : x
  2. Step 2: Convert to fraction form
    20,246.40/27,921.83 = 12,693.56/x
  3. Step 3: Cross multiply
    20,246.40x = 27,921.83 × 12,693.56
  4. Step 4: Simplify right side
    20,246.40x = 354,427,316.54
  5. Step 5: Solve for x
    x = 354,427,316.54/20,246.40
  6. Step 6: Final answer
    x = 17,505.70

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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.