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Finding the Fourth Proportional to 12,672.84, 17,487.96 and 7,295.05

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Solution

The fourth proportional to 12,672.84, 17,487.96 and 7,295.05 is: 10,066.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.84 : 17,487.96 = 7,295.05 : x
  2. Step 2: Convert to fraction form
    12,672.84/17,487.96 = 7,295.05/x
  3. Step 3: Cross multiply
    12,672.84x = 17,487.96 × 7,295.05
  4. Step 4: Simplify right side
    12,672.84x = 127,575,542.60
  5. Step 5: Solve for x
    x = 127,575,542.60/12,672.84
  6. Step 6: Final answer
    x = 10,066.85

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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.