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Finding the Fourth Proportional to 12,725.77, 17,560.77 and 7,687.01

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Solution

The fourth proportional to 12,725.77, 17,560.77 and 7,687.01 is: 10,607.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.77 : 17,560.77 = 7,687.01 : x
  2. Step 2: Convert to fraction form
    12,725.77/17,560.77 = 7,687.01/x
  3. Step 3: Cross multiply
    12,725.77x = 17,560.77 × 7,687.01
  4. Step 4: Simplify right side
    12,725.77x = 134,989,839.28
  5. Step 5: Solve for x
    x = 134,989,839.28/12,725.77
  6. Step 6: Final answer
    x = 10,607.60

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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.