Home / 28,520.32-42,706.59-19,662.97

Finding the Fourth Proportional to 28,520.32, 42,706.59 and 19,662.97

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Solution

The fourth proportional to 28,520.32, 42,706.59 and 19,662.97 is: 29,443.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.32 : 42,706.59 = 19,662.97 : x
  2. Step 2: Convert to fraction form
    28,520.32/42,706.59 = 19,662.97/x
  3. Step 3: Cross multiply
    28,520.32x = 42,706.59 × 19,662.97
  4. Step 4: Simplify right side
    28,520.32x = 839,738,408.15
  5. Step 5: Solve for x
    x = 839,738,408.15/28,520.32
  6. Step 6: Final answer
    x = 29,443.51

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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.