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Finding the Fourth Proportional to 12,761.70, 17,610.12 and 7,455.93

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Solution

The fourth proportional to 12,761.70, 17,610.12 and 7,455.93 is: 10,288.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.70 : 17,610.12 = 7,455.93 : x
  2. Step 2: Convert to fraction form
    12,761.70/17,610.12 = 7,455.93/x
  3. Step 3: Cross multiply
    12,761.70x = 17,610.12 × 7,455.93
  4. Step 4: Simplify right side
    12,761.70x = 131,299,822.01
  5. Step 5: Solve for x
    x = 131,299,822.01/12,761.70
  6. Step 6: Final answer
    x = 10,288.58

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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.