Home / 20,577.88-28,397.47-11,146.44

Finding the Fourth Proportional to 20,577.88, 28,397.47 and 11,146.44

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Solution

The fourth proportional to 20,577.88, 28,397.47 and 11,146.44 is: 15,382.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.88 : 28,397.47 = 11,146.44 : x
  2. Step 2: Convert to fraction form
    20,577.88/28,397.47 = 11,146.44/x
  3. Step 3: Cross multiply
    20,577.88x = 28,397.47 × 11,146.44
  4. Step 4: Simplify right side
    20,577.88x = 316,530,723.37
  5. Step 5: Solve for x
    x = 316,530,723.37/20,577.88
  6. Step 6: Final answer
    x = 15,382.09

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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.