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Finding the Fourth Proportional to 13,953.75, 19,258.61 and 8,364.75

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Solution

The fourth proportional to 13,953.75, 19,258.61 and 8,364.75 is: 11,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.75 : 19,258.61 = 8,364.75 : x
  2. Step 2: Convert to fraction form
    13,953.75/19,258.61 = 8,364.75/x
  3. Step 3: Cross multiply
    13,953.75x = 19,258.61 × 8,364.75
  4. Step 4: Simplify right side
    13,953.75x = 161,093,416.17
  5. Step 5: Solve for x
    x = 161,093,416.17/13,953.75
  6. Step 6: Final answer
    x = 11,544.81

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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.