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Finding the Fourth Proportional to 12,611.12, 17,400.12 and 7,021.04

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Solution

The fourth proportional to 12,611.12, 17,400.12 and 7,021.04 is: 9,687.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.12 : 17,400.12 = 7,021.04 : x
  2. Step 2: Convert to fraction form
    12,611.12/17,400.12 = 7,021.04/x
  3. Step 3: Cross multiply
    12,611.12x = 17,400.12 × 7,021.04
  4. Step 4: Simplify right side
    12,611.12x = 122,166,938.52
  5. Step 5: Solve for x
    x = 122,166,938.52/12,611.12
  6. Step 6: Final answer
    x = 9,687.24

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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.