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Finding the Fourth Proportional to 12,706.70, 17,536.16 and 7,672.14

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Solution

The fourth proportional to 12,706.70, 17,536.16 and 7,672.14 is: 10,588.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,706.70 : 17,536.16 = 7,672.14 : x
  2. Step 2: Convert to fraction form
    12,706.70/17,536.16 = 7,672.14/x
  3. Step 3: Cross multiply
    12,706.70x = 17,536.16 × 7,672.14
  4. Step 4: Simplify right side
    12,706.70x = 134,539,893.76
  5. Step 5: Solve for x
    x = 134,539,893.76/12,706.70
  6. Step 6: Final answer
    x = 10,588.11

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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.