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Finding the Fourth Proportional to 12,672.45, 17,489.12 and 7,008.53

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Solution

The fourth proportional to 12,672.45, 17,489.12 and 7,008.53 is: 9,672.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.45 : 17,489.12 = 7,008.53 : x
  2. Step 2: Convert to fraction form
    12,672.45/17,489.12 = 7,008.53/x
  3. Step 3: Cross multiply
    12,672.45x = 17,489.12 × 7,008.53
  4. Step 4: Simplify right side
    12,672.45x = 122,572,899.71
  5. Step 5: Solve for x
    x = 122,572,899.71/12,672.45
  6. Step 6: Final answer
    x = 9,672.39

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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.