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Finding the Fourth Proportional to 13,103.75, 18,084.75 and 7,440.26

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Solution

The fourth proportional to 13,103.75, 18,084.75 and 7,440.26 is: 10,268.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.75 : 18,084.75 = 7,440.26 : x
  2. Step 2: Convert to fraction form
    13,103.75/18,084.75 = 7,440.26/x
  3. Step 3: Cross multiply
    13,103.75x = 18,084.75 × 7,440.26
  4. Step 4: Simplify right side
    13,103.75x = 134,555,151.61
  5. Step 5: Solve for x
    x = 134,555,151.61/13,103.75
  6. Step 6: Final answer
    x = 10,268.45

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Half scale
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Double scale
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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.