Home / 20,637.82-28,480.29-11,206.38

Finding the Fourth Proportional to 20,637.82, 28,480.29 and 11,206.38

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Solution

The fourth proportional to 20,637.82, 28,480.29 and 11,206.38 is: 15,464.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.82 : 28,480.29 = 11,206.38 : x
  2. Step 2: Convert to fraction form
    20,637.82/28,480.29 = 11,206.38/x
  3. Step 3: Cross multiply
    20,637.82x = 28,480.29 × 11,206.38
  4. Step 4: Simplify right side
    20,637.82x = 319,160,952.25
  5. Step 5: Solve for x
    x = 319,160,952.25/20,637.82
  6. Step 6: Final answer
    x = 15,464.86

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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.