Home / 29,161.32-40,199.60-20,636.96

Finding the Fourth Proportional to 29,161.32, 40,199.60 and 20,636.96

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Solution

The fourth proportional to 29,161.32, 40,199.60 and 20,636.96 is: 28,448.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,161.32 : 40,199.60 = 20,636.96 : x
  2. Step 2: Convert to fraction form
    29,161.32/40,199.60 = 20,636.96/x
  3. Step 3: Cross multiply
    29,161.32x = 40,199.60 × 20,636.96
  4. Step 4: Simplify right side
    29,161.32x = 829,597,537.22
  5. Step 5: Solve for x
    x = 829,597,537.22/29,161.32
  6. Step 6: Final answer
    x = 28,448.56

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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.