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Finding the Fourth Proportional to 12,544.40, 17,314.38 and 7,242.40

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Solution

The fourth proportional to 12,544.40, 17,314.38 and 7,242.40 is: 9,996.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,544.40 : 17,314.38 = 7,242.40 : x
  2. Step 2: Convert to fraction form
    12,544.40/17,314.38 = 7,242.40/x
  3. Step 3: Cross multiply
    12,544.40x = 17,314.38 × 7,242.40
  4. Step 4: Simplify right side
    12,544.40x = 125,397,665.71
  5. Step 5: Solve for x
    x = 125,397,665.71/12,544.40
  6. Step 6: Final answer
    x = 9,996.31

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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.