Home / 20,945.35-28,904.69-11,514.52

Finding the Fourth Proportional to 20,945.35, 28,904.69 and 11,514.52

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Solution

The fourth proportional to 20,945.35, 28,904.69 and 11,514.52 is: 15,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.35 : 28,904.69 = 11,514.52 : x
  2. Step 2: Convert to fraction form
    20,945.35/28,904.69 = 11,514.52/x
  3. Step 3: Cross multiply
    20,945.35x = 28,904.69 × 11,514.52
  4. Step 4: Simplify right side
    20,945.35x = 332,823,631.10
  5. Step 5: Solve for x
    x = 332,823,631.10/20,945.35
  6. Step 6: Final answer
    x = 15,890.10

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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.