Home / 20,407.96-30,616.80-11,057.32

Finding the Fourth Proportional to 20,407.96, 30,616.80 and 11,057.32

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Solution

The fourth proportional to 20,407.96, 30,616.80 and 11,057.32 is: 16,588.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.96 : 30,616.80 = 11,057.32 : x
  2. Step 2: Convert to fraction form
    20,407.96/30,616.80 = 11,057.32/x
  3. Step 3: Cross multiply
    20,407.96x = 30,616.80 × 11,057.32
  4. Step 4: Simplify right side
    20,407.96x = 338,539,754.98
  5. Step 5: Solve for x
    x = 338,539,754.98/20,407.96
  6. Step 6: Final answer
    x = 16,588.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.