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Finding the Fourth Proportional to 12,611.57, 17,402.65 and 7,305.39

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Solution

The fourth proportional to 12,611.57, 17,402.65 and 7,305.39 is: 10,080.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.57 : 17,402.65 = 7,305.39 : x
  2. Step 2: Convert to fraction form
    12,611.57/17,402.65 = 7,305.39/x
  3. Step 3: Cross multiply
    12,611.57x = 17,402.65 × 7,305.39
  4. Step 4: Simplify right side
    12,611.57x = 127,133,127.02
  5. Step 5: Solve for x
    x = 127,133,127.02/12,611.57
  6. Step 6: Final answer
    x = 10,080.68

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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.