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Finding the Fourth Proportional to 11,073.70, 16,615.95 and 8,440.30

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Solution

The fourth proportional to 11,073.70, 16,615.95 and 8,440.30 is: 12,664.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,073.70 : 16,615.95 = 8,440.30 : x
  2. Step 2: Convert to fraction form
    11,073.70/16,615.95 = 8,440.30/x
  3. Step 3: Cross multiply
    11,073.70x = 16,615.95 × 8,440.30
  4. Step 4: Simplify right side
    11,073.70x = 140,243,602.79
  5. Step 5: Solve for x
    x = 140,243,602.79/11,073.70
  6. Step 6: Final answer
    x = 12,664.57

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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.