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Finding the Fourth Proportional to 12,761.04, 17,611.62 and 7,457.64

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Solution

The fourth proportional to 12,761.04, 17,611.62 and 7,457.64 is: 10,292.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.04 : 17,611.62 = 7,457.64 : x
  2. Step 2: Convert to fraction form
    12,761.04/17,611.62 = 7,457.64/x
  3. Step 3: Cross multiply
    12,761.04x = 17,611.62 × 7,457.64
  4. Step 4: Simplify right side
    12,761.04x = 131,341,121.78
  5. Step 5: Solve for x
    x = 131,341,121.78/12,761.04
  6. Step 6: Final answer
    x = 10,292.35

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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.