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Finding the Fourth Proportional to 12,905.01, 17,806.76 and 7,600.88

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Solution

The fourth proportional to 12,905.01, 17,806.76 and 7,600.88 is: 10,487.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.01 : 17,806.76 = 7,600.88 : x
  2. Step 2: Convert to fraction form
    12,905.01/17,806.76 = 7,600.88/x
  3. Step 3: Cross multiply
    12,905.01x = 17,806.76 × 7,600.88
  4. Step 4: Simplify right side
    12,905.01x = 135,347,052.46
  5. Step 5: Solve for x
    x = 135,347,052.46/12,905.01
  6. Step 6: Final answer
    x = 10,487.95

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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.