Home / 12,042.72-18,069.84-4,255.20

Finding the Fourth Proportional to 12,042.72, 18,069.84 and 4,255.20

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Solution

The fourth proportional to 12,042.72, 18,069.84 and 4,255.20 is: 6,384.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,042.72 : 18,069.84 = 4,255.20 : x
  2. Step 2: Convert to fraction form
    12,042.72/18,069.84 = 4,255.20/x
  3. Step 3: Cross multiply
    12,042.72x = 18,069.84 × 4,255.20
  4. Step 4: Simplify right side
    12,042.72x = 76,890,783.17
  5. Step 5: Solve for x
    x = 76,890,783.17/12,042.72
  6. Step 6: Final answer
    x = 6,384.84

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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.