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Finding the Fourth Proportional to 12,755.94, 17,603.08 and 7,090.66

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Solution

The fourth proportional to 12,755.94, 17,603.08 and 7,090.66 is: 9,785.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.94 : 17,603.08 = 7,090.66 : x
  2. Step 2: Convert to fraction form
    12,755.94/17,603.08 = 7,090.66/x
  3. Step 3: Cross multiply
    12,755.94x = 17,603.08 × 7,090.66
  4. Step 4: Simplify right side
    12,755.94x = 124,817,455.23
  5. Step 5: Solve for x
    x = 124,817,455.23/12,755.94
  6. Step 6: Final answer
    x = 9,785.05

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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.