Home / 28,524.80-42,787.20-19,193.60

Finding the Fourth Proportional to 28,524.80, 42,787.20 and 19,193.60

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Solution

The fourth proportional to 28,524.80, 42,787.20 and 19,193.60 is: 28,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,524.80 : 42,787.20 = 19,193.60 : x
  2. Step 2: Convert to fraction form
    28,524.80/42,787.20 = 19,193.60/x
  3. Step 3: Cross multiply
    28,524.80x = 42,787.20 × 19,193.60
  4. Step 4: Simplify right side
    28,524.80x = 821,240,401.92
  5. Step 5: Solve for x
    x = 821,240,401.92/28,524.80
  6. Step 6: Final answer
    x = 28,790.40

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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.