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Finding the Fourth Proportional to 12,729.06, 17,566.05 and 7,761.06

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Solution

The fourth proportional to 12,729.06, 17,566.05 and 7,761.06 is: 10,710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.06 : 17,566.05 = 7,761.06 : x
  2. Step 2: Convert to fraction form
    12,729.06/17,566.05 = 7,761.06/x
  3. Step 3: Cross multiply
    12,729.06x = 17,566.05 × 7,761.06
  4. Step 4: Simplify right side
    12,729.06x = 136,331,168.01
  5. Step 5: Solve for x
    x = 136,331,168.01/12,729.06
  6. Step 6: Final answer
    x = 10,710.23

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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.