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Finding the Fourth Proportional to 12,101.40, 16,696.80 and 7,624.80

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Solution

The fourth proportional to 12,101.40, 16,696.80 and 7,624.80 is: 10,520.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.40 : 16,696.80 = 7,624.80 : x
  2. Step 2: Convert to fraction form
    12,101.40/16,696.80 = 7,624.80/x
  3. Step 3: Cross multiply
    12,101.40x = 16,696.80 × 7,624.80
  4. Step 4: Simplify right side
    12,101.40x = 127,309,760.64
  5. Step 5: Solve for x
    x = 127,309,760.64/12,101.40
  6. Step 6: Final answer
    x = 10,520.25

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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.