Home / 20,646.95-28,493.18-11,694.42

Finding the Fourth Proportional to 20,646.95, 28,493.18 and 11,694.42

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Solution

The fourth proportional to 20,646.95, 28,493.18 and 11,694.42 is: 16,138.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.95 : 28,493.18 = 11,694.42 : x
  2. Step 2: Convert to fraction form
    20,646.95/28,493.18 = 11,694.42/x
  3. Step 3: Cross multiply
    20,646.95x = 28,493.18 × 11,694.42
  4. Step 4: Simplify right side
    20,646.95x = 333,211,155.58
  5. Step 5: Solve for x
    x = 333,211,155.58/20,646.95
  6. Step 6: Final answer
    x = 16,138.52

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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.