Home / 20,676.27-28,533.56-12,713.79

Finding the Fourth Proportional to 20,676.27, 28,533.56 and 12,713.79

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Solution

The fourth proportional to 20,676.27, 28,533.56 and 12,713.79 is: 17,545.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.27 : 28,533.56 = 12,713.79 : x
  2. Step 2: Convert to fraction form
    20,676.27/28,533.56 = 12,713.79/x
  3. Step 3: Cross multiply
    20,676.27x = 28,533.56 × 12,713.79
  4. Step 4: Simplify right side
    20,676.27x = 362,769,626.22
  5. Step 5: Solve for x
    x = 362,769,626.22/20,676.27
  6. Step 6: Final answer
    x = 17,545.22

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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.