Home / 20,595.77-28,404.27-13,422.92

Finding the Fourth Proportional to 20,595.77, 28,404.27 and 13,422.92

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Solution

The fourth proportional to 20,595.77, 28,404.27 and 13,422.92 is: 18,511.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.77 : 28,404.27 = 13,422.92 : x
  2. Step 2: Convert to fraction form
    20,595.77/28,404.27 = 13,422.92/x
  3. Step 3: Cross multiply
    20,595.77x = 28,404.27 × 13,422.92
  4. Step 4: Simplify right side
    20,595.77x = 381,268,101.85
  5. Step 5: Solve for x
    x = 381,268,101.85/20,595.77
  6. Step 6: Final answer
    x = 18,511.96

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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.