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Finding the Fourth Proportional to 12,745.30, 17,587.64 and 7,079.58

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Solution

The fourth proportional to 12,745.30, 17,587.64 and 7,079.58 is: 9,769.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.30 : 17,587.64 = 7,079.58 : x
  2. Step 2: Convert to fraction form
    12,745.30/17,587.64 = 7,079.58/x
  3. Step 3: Cross multiply
    12,745.30x = 17,587.64 × 7,079.58
  4. Step 4: Simplify right side
    12,745.30x = 124,513,104.39
  5. Step 5: Solve for x
    x = 124,513,104.39/12,745.30
  6. Step 6: Final answer
    x = 9,769.33

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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.