Home / 20,677.89-28,536.14-11,725.77

Finding the Fourth Proportional to 20,677.89, 28,536.14 and 11,725.77

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Solution

The fourth proportional to 20,677.89, 28,536.14 and 11,725.77 is: 16,181.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.89 : 28,536.14 = 11,725.77 : x
  2. Step 2: Convert to fraction form
    20,677.89/28,536.14 = 11,725.77/x
  3. Step 3: Cross multiply
    20,677.89x = 28,536.14 × 11,725.77
  4. Step 4: Simplify right side
    20,677.89x = 334,608,155.70
  5. Step 5: Solve for x
    x = 334,608,155.70/20,677.89
  6. Step 6: Final answer
    x = 16,181.93

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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.