Home / 12,379.73-17,090.66-9,561.69

Finding the Fourth Proportional to 12,379.73, 17,090.66 and 9,561.69

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Solution

The fourth proportional to 12,379.73, 17,090.66 and 9,561.69 is: 13,200.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.73 : 17,090.66 = 9,561.69 : x
  2. Step 2: Convert to fraction form
    12,379.73/17,090.66 = 9,561.69/x
  3. Step 3: Cross multiply
    12,379.73x = 17,090.66 × 9,561.69
  4. Step 4: Simplify right side
    12,379.73x = 163,415,507.36
  5. Step 5: Solve for x
    x = 163,415,507.36/12,379.73
  6. Step 6: Final answer
    x = 13,200.25

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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.