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Finding the Fourth Proportional to 12,246.87, 16,900.70 and 6,657.87

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Solution

The fourth proportional to 12,246.87, 16,900.70 and 6,657.87 is: 9,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,246.87 : 16,900.70 = 6,657.87 : x
  2. Step 2: Convert to fraction form
    12,246.87/16,900.70 = 6,657.87/x
  3. Step 3: Cross multiply
    12,246.87x = 16,900.70 × 6,657.87
  4. Step 4: Simplify right side
    12,246.87x = 112,522,630.22
  5. Step 5: Solve for x
    x = 112,522,630.22/12,246.87
  6. Step 6: Final answer
    x = 9,187.87

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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.