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Finding the Fourth Proportional to 18,641.50, 25,725.28 and 10,258

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Solution

The fourth proportional to 18,641.50, 25,725.28 and 10,258 is: 14,156.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.50 : 25,725.28 = 10,258 : x
  2. Step 2: Convert to fraction form
    18,641.50/25,725.28 = 10,258/x
  3. Step 3: Cross multiply
    18,641.50x = 25,725.28 × 10,258
  4. Step 4: Simplify right side
    18,641.50x = 263,889,922.24
  5. Step 5: Solve for x
    x = 263,889,922.24/18,641.50
  6. Step 6: Final answer
    x = 14,156.05

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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.