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Finding the Fourth Proportional to 12,903.66, 17,691.12 and 12,670.38

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Solution

The fourth proportional to 12,903.66, 17,691.12 and 12,670.38 is: 17,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.66 : 17,691.12 = 12,670.38 : x
  2. Step 2: Convert to fraction form
    12,903.66/17,691.12 = 12,670.38/x
  3. Step 3: Cross multiply
    12,903.66x = 17,691.12 × 12,670.38
  4. Step 4: Simplify right side
    12,903.66x = 224,153,213.03
  5. Step 5: Solve for x
    x = 224,153,213.03/12,903.66
  6. Step 6: Final answer
    x = 17,371.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.