Home / 12,454.09-17,187.67-7,149.93

Finding the Fourth Proportional to 12,454.09, 17,187.67 and 7,149.93

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Solution

The fourth proportional to 12,454.09, 17,187.67 and 7,149.93 is: 9,867.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,454.09 : 17,187.67 = 7,149.93 : x
  2. Step 2: Convert to fraction form
    12,454.09/17,187.67 = 7,149.93/x
  3. Step 3: Cross multiply
    12,454.09x = 17,187.67 × 7,149.93
  4. Step 4: Simplify right side
    12,454.09x = 122,890,637.36
  5. Step 5: Solve for x
    x = 122,890,637.36/12,454.09
  6. Step 6: Final answer
    x = 9,867.49

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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.