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Finding the Fourth Proportional to 10,905.00, 16,283.63 and 8,658.63

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Solution

The fourth proportional to 10,905.00, 16,283.63 and 8,658.63 is: 12,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.00 : 16,283.63 = 8,658.63 : x
  2. Step 2: Convert to fraction form
    10,905.00/16,283.63 = 8,658.63/x
  3. Step 3: Cross multiply
    10,905.00x = 16,283.63 × 8,658.63
  4. Step 4: Simplify right side
    10,905.00x = 140,993,890.90
  5. Step 5: Solve for x
    x = 140,993,890.90/10,905.00
  6. Step 6: Final answer
    x = 12,929.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.