Home / 29,986.12-41,380.50-20,557.72

Finding the Fourth Proportional to 29,986.12, 41,380.50 and 20,557.72

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Solution

The fourth proportional to 29,986.12, 41,380.50 and 20,557.72 is: 28,369.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,986.12 : 41,380.50 = 20,557.72 : x
  2. Step 2: Convert to fraction form
    29,986.12/41,380.50 = 20,557.72/x
  3. Step 3: Cross multiply
    29,986.12x = 41,380.50 × 20,557.72
  4. Step 4: Simplify right side
    29,986.12x = 850,688,732.46
  5. Step 5: Solve for x
    x = 850,688,732.46/29,986.12
  6. Step 6: Final answer
    x = 28,369.42

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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.