Home / 20,796.86-28,700.10-11,725.06

Finding the Fourth Proportional to 20,796.86, 28,700.10 and 11,725.06

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Solution

The fourth proportional to 20,796.86, 28,700.10 and 11,725.06 is: 16,180.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.86 : 28,700.10 = 11,725.06 : x
  2. Step 2: Convert to fraction form
    20,796.86/28,700.10 = 11,725.06/x
  3. Step 3: Cross multiply
    20,796.86x = 28,700.10 × 11,725.06
  4. Step 4: Simplify right side
    20,796.86x = 336,510,424.31
  5. Step 5: Solve for x
    x = 336,510,424.31/20,796.86
  6. Step 6: Final answer
    x = 16,180.83

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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.