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Finding the Fourth Proportional to 18,486.94, 25,512.60 and 10,103.98

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Solution

The fourth proportional to 18,486.94, 25,512.60 and 10,103.98 is: 13,943.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.94 : 25,512.60 = 10,103.98 : x
  2. Step 2: Convert to fraction form
    18,486.94/25,512.60 = 10,103.98/x
  3. Step 3: Cross multiply
    18,486.94x = 25,512.60 × 10,103.98
  4. Step 4: Simplify right side
    18,486.94x = 257,778,774.26
  5. Step 5: Solve for x
    x = 257,778,774.26/18,486.94
  6. Step 6: Final answer
    x = 13,943.83

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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.