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Finding the Fourth Proportional to 10,818.66, 14,921.94 and 8,353.91

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Solution

The fourth proportional to 10,818.66, 14,921.94 and 8,353.91 is: 11,522.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,818.66 : 14,921.94 = 8,353.91 : x
  2. Step 2: Convert to fraction form
    10,818.66/14,921.94 = 8,353.91/x
  3. Step 3: Cross multiply
    10,818.66x = 14,921.94 × 8,353.91
  4. Step 4: Simplify right side
    10,818.66x = 124,656,469.18
  5. Step 5: Solve for x
    x = 124,656,469.18/10,818.66
  6. Step 6: Final answer
    x = 11,522.36

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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.