Home / 28,244.28-42,380.34-19,977.42

Finding the Fourth Proportional to 28,244.28, 42,380.34 and 19,977.42

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Solution

The fourth proportional to 28,244.28, 42,380.34 and 19,977.42 is: 29,975.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,244.28 : 42,380.34 = 19,977.42 : x
  2. Step 2: Convert to fraction form
    28,244.28/42,380.34 = 19,977.42/x
  3. Step 3: Cross multiply
    28,244.28x = 42,380.34 × 19,977.42
  4. Step 4: Simplify right side
    28,244.28x = 846,649,851.92
  5. Step 5: Solve for x
    x = 846,649,851.92/28,244.28
  6. Step 6: Final answer
    x = 29,975.98

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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.