Home / 20,335.69-28,063.76-11,383.12

Finding the Fourth Proportional to 20,335.69, 28,063.76 and 11,383.12

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Solution

The fourth proportional to 20,335.69, 28,063.76 and 11,383.12 is: 15,708.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.69 : 28,063.76 = 11,383.12 : x
  2. Step 2: Convert to fraction form
    20,335.69/28,063.76 = 11,383.12/x
  3. Step 3: Cross multiply
    20,335.69x = 28,063.76 × 11,383.12
  4. Step 4: Simplify right side
    20,335.69x = 319,453,147.73
  5. Step 5: Solve for x
    x = 319,453,147.73/20,335.69
  6. Step 6: Final answer
    x = 15,708.99

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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.