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Finding the Fourth Proportional to 12,654.46, 17,461.65 and 7,618.60

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Solution

The fourth proportional to 12,654.46, 17,461.65 and 7,618.60 is: 10,512.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.46 : 17,461.65 = 7,618.60 : x
  2. Step 2: Convert to fraction form
    12,654.46/17,461.65 = 7,618.60/x
  3. Step 3: Cross multiply
    12,654.46x = 17,461.65 × 7,618.60
  4. Step 4: Simplify right side
    12,654.46x = 133,033,326.69
  5. Step 5: Solve for x
    x = 133,033,326.69/12,654.46
  6. Step 6: Final answer
    x = 10,512.76

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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.