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Finding the Fourth Proportional to 12,444.51, 17,171.48 and 7,138.59

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Solution

The fourth proportional to 12,444.51, 17,171.48 and 7,138.59 is: 9,850.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444.51 : 17,171.48 = 7,138.59 : x
  2. Step 2: Convert to fraction form
    12,444.51/17,171.48 = 7,138.59/x
  3. Step 3: Cross multiply
    12,444.51x = 17,171.48 × 7,138.59
  4. Step 4: Simplify right side
    12,444.51x = 122,580,119.72
  5. Step 5: Solve for x
    x = 122,580,119.72/12,444.51
  6. Step 6: Final answer
    x = 9,850.14

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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.