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Finding the Fourth Proportional to 12,895.04, 17,679.26 and 12,661.76

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Solution

The fourth proportional to 12,895.04, 17,679.26 and 12,661.76 is: 17,359.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,895.04 : 17,679.26 = 12,661.76 : x
  2. Step 2: Convert to fraction form
    12,895.04/17,679.26 = 12,661.76/x
  3. Step 3: Cross multiply
    12,895.04x = 17,679.26 × 12,661.76
  4. Step 4: Simplify right side
    12,895.04x = 223,850,442.87
  5. Step 5: Solve for x
    x = 223,850,442.87/12,895.04
  6. Step 6: Final answer
    x = 17,359.43

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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.