Home / 20,789.36-28,698.76-13,246.03

Finding the Fourth Proportional to 20,789.36, 28,698.76 and 13,246.03

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Solution

The fourth proportional to 20,789.36, 28,698.76 and 13,246.03 is: 18,285.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,789.36 : 28,698.76 = 13,246.03 : x
  2. Step 2: Convert to fraction form
    20,789.36/28,698.76 = 13,246.03/x
  3. Step 3: Cross multiply
    20,789.36x = 28,698.76 × 13,246.03
  4. Step 4: Simplify right side
    20,789.36x = 380,144,613.84
  5. Step 5: Solve for x
    x = 380,144,613.84/20,789.36
  6. Step 6: Final answer
    x = 18,285.54

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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.