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Finding the Fourth Proportional to 12,263.55, 16,929.99 and 7,229.39

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Solution

The fourth proportional to 12,263.55, 16,929.99 and 7,229.39 is: 9,980.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,263.55 : 16,929.99 = 7,229.39 : x
  2. Step 2: Convert to fraction form
    12,263.55/16,929.99 = 7,229.39/x
  3. Step 3: Cross multiply
    12,263.55x = 16,929.99 × 7,229.39
  4. Step 4: Simplify right side
    12,263.55x = 122,393,500.41
  5. Step 5: Solve for x
    x = 122,393,500.41/12,263.55
  6. Step 6: Final answer
    x = 9,980.27

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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.