Home / 20,826.70-28,741.56-11,395.26

Finding the Fourth Proportional to 20,826.70, 28,741.56 and 11,395.26

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Solution

The fourth proportional to 20,826.70, 28,741.56 and 11,395.26 is: 15,725.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.70 : 28,741.56 = 11,395.26 : x
  2. Step 2: Convert to fraction form
    20,826.70/28,741.56 = 11,395.26/x
  3. Step 3: Cross multiply
    20,826.70x = 28,741.56 × 11,395.26
  4. Step 4: Simplify right side
    20,826.70x = 327,517,549.01
  5. Step 5: Solve for x
    x = 327,517,549.01/20,826.70
  6. Step 6: Final answer
    x = 15,725.85

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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.