Home / 12,681.09-17,504.22-7,380.35

Finding the Fourth Proportional to 12,681.09, 17,504.22 and 7,380.35

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Solution

The fourth proportional to 12,681.09, 17,504.22 and 7,380.35 is: 10,187.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.09 : 17,504.22 = 7,380.35 : x
  2. Step 2: Convert to fraction form
    12,681.09/17,504.22 = 7,380.35/x
  3. Step 3: Cross multiply
    12,681.09x = 17,504.22 × 7,380.35
  4. Step 4: Simplify right side
    12,681.09x = 129,187,182.56
  5. Step 5: Solve for x
    x = 129,187,182.56/12,681.09
  6. Step 6: Final answer
    x = 10,187.39

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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.