Home / 12,758.22-17,587.80-8,969.76

Finding the Fourth Proportional to 12,758.22, 17,587.80 and 8,969.76

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Solution

The fourth proportional to 12,758.22, 17,587.80 and 8,969.76 is: 12,365.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.22 : 17,587.80 = 8,969.76 : x
  2. Step 2: Convert to fraction form
    12,758.22/17,587.80 = 8,969.76/x
  3. Step 3: Cross multiply
    12,758.22x = 17,587.80 × 8,969.76
  4. Step 4: Simplify right side
    12,758.22x = 157,758,344.93
  5. Step 5: Solve for x
    x = 157,758,344.93/12,758.22
  6. Step 6: Final answer
    x = 12,365.23

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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.