Home / 29,855.86-41,157.45-20,875.42

Finding the Fourth Proportional to 29,855.86, 41,157.45 and 20,875.42

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Solution

The fourth proportional to 29,855.86, 41,157.45 and 20,875.42 is: 28,777.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,855.86 : 41,157.45 = 20,875.42 : x
  2. Step 2: Convert to fraction form
    29,855.86/41,157.45 = 20,875.42/x
  3. Step 3: Cross multiply
    29,855.86x = 41,157.45 × 20,875.42
  4. Step 4: Simplify right side
    29,855.86x = 859,179,054.88
  5. Step 5: Solve for x
    x = 859,179,054.88/29,855.86
  6. Step 6: Final answer
    x = 28,777.57

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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.