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Finding the Fourth Proportional to 12,679.85, 17,497.88 and 7,014.92

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Solution

The fourth proportional to 12,679.85, 17,497.88 and 7,014.92 is: 9,680.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.85 : 17,497.88 = 7,014.92 : x
  2. Step 2: Convert to fraction form
    12,679.85/17,497.88 = 7,014.92/x
  3. Step 3: Cross multiply
    12,679.85x = 17,497.88 × 7,014.92
  4. Step 4: Simplify right side
    12,679.85x = 122,746,140.88
  5. Step 5: Solve for x
    x = 122,746,140.88/12,679.85
  6. Step 6: Final answer
    x = 9,680.41

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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.