Home / 20,538.26-28,342.80-11,106.82

Finding the Fourth Proportional to 20,538.26, 28,342.80 and 11,106.82

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Solution

The fourth proportional to 20,538.26, 28,342.80 and 11,106.82 is: 15,327.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.26 : 28,342.80 = 11,106.82 : x
  2. Step 2: Convert to fraction form
    20,538.26/28,342.80 = 11,106.82/x
  3. Step 3: Cross multiply
    20,538.26x = 28,342.80 × 11,106.82
  4. Step 4: Simplify right side
    20,538.26x = 314,798,377.90
  5. Step 5: Solve for x
    x = 314,798,377.90/20,538.26
  6. Step 6: Final answer
    x = 15,327.41

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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.