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Finding the Fourth Proportional to 12,321.16, 17,003.22 and 6,655.93

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Solution

The fourth proportional to 12,321.16, 17,003.22 and 6,655.93 is: 9,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.16 : 17,003.22 = 6,655.93 : x
  2. Step 2: Convert to fraction form
    12,321.16/17,003.22 = 6,655.93/x
  3. Step 3: Cross multiply
    12,321.16x = 17,003.22 × 6,655.93
  4. Step 4: Simplify right side
    12,321.16x = 113,172,242.09
  5. Step 5: Solve for x
    x = 113,172,242.09/12,321.16
  6. Step 6: Final answer
    x = 9,185.19

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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.