Home / 28,113.30-42,179.09-8,392.02

Finding the Fourth Proportional to 28,113.30, 42,179.09 and 8,392.02

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Solution

The fourth proportional to 28,113.30, 42,179.09 and 8,392.02 is: 12,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.30 : 42,179.09 = 8,392.02 : x
  2. Step 2: Convert to fraction form
    28,113.30/42,179.09 = 8,392.02/x
  3. Step 3: Cross multiply
    28,113.30x = 42,179.09 × 8,392.02
  4. Step 4: Simplify right side
    28,113.30x = 353,967,724.90
  5. Step 5: Solve for x
    x = 353,967,724.90/28,113.30
  6. Step 6: Final answer
    x = 12,590.76

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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.