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Finding the Fourth Proportional to 18,630.30, 25,708.03 and 10,671.45

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Solution

The fourth proportional to 18,630.30, 25,708.03 and 10,671.45 is: 14,725.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.30 : 25,708.03 = 10,671.45 : x
  2. Step 2: Convert to fraction form
    18,630.30/25,708.03 = 10,671.45/x
  3. Step 3: Cross multiply
    18,630.30x = 25,708.03 × 10,671.45
  4. Step 4: Simplify right side
    18,630.30x = 274,341,893.69
  5. Step 5: Solve for x
    x = 274,341,893.69/18,630.30
  6. Step 6: Final answer
    x = 14,725.57

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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.