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Finding the Fourth Proportional to 15,042.44, 20,756.81 and 8,328.04

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Solution

The fourth proportional to 15,042.44, 20,756.81 and 8,328.04 is: 11,491.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,042.44 : 20,756.81 = 8,328.04 : x
  2. Step 2: Convert to fraction form
    15,042.44/20,756.81 = 8,328.04/x
  3. Step 3: Cross multiply
    15,042.44x = 20,756.81 × 8,328.04
  4. Step 4: Simplify right side
    15,042.44x = 172,863,512.88
  5. Step 5: Solve for x
    x = 172,863,512.88/15,042.44
  6. Step 6: Final answer
    x = 11,491.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.