Home / 20,635.48-28,476.14-11,203.80

Finding the Fourth Proportional to 20,635.48, 28,476.14 and 11,203.80

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Solution

The fourth proportional to 20,635.48, 28,476.14 and 11,203.80 is: 15,460.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.48 : 28,476.14 = 11,203.80 : x
  2. Step 2: Convert to fraction form
    20,635.48/28,476.14 = 11,203.80/x
  3. Step 3: Cross multiply
    20,635.48x = 28,476.14 × 11,203.80
  4. Step 4: Simplify right side
    20,635.48x = 319,040,977.33
  5. Step 5: Solve for x
    x = 319,040,977.33/20,635.48
  6. Step 6: Final answer
    x = 15,460.80

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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.