Home / 28,361.34-42,517.31-20,444.40

Finding the Fourth Proportional to 28,361.34, 42,517.31 and 20,444.40

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Solution

The fourth proportional to 28,361.34, 42,517.31 and 20,444.40 is: 30,648.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,361.34 : 42,517.31 = 20,444.40 : x
  2. Step 2: Convert to fraction form
    28,361.34/42,517.31 = 20,444.40/x
  3. Step 3: Cross multiply
    28,361.34x = 42,517.31 × 20,444.40
  4. Step 4: Simplify right side
    28,361.34x = 869,240,790.34
  5. Step 5: Solve for x
    x = 869,240,790.34/28,361.34
  6. Step 6: Final answer
    x = 30,648.79

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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.