Home / 18,487.45-25,512.68-10,103.95

Finding the Fourth Proportional to 18,487.45, 25,512.68 and 10,103.95

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Solution

The fourth proportional to 18,487.45, 25,512.68 and 10,103.95 is: 13,943.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.45 : 25,512.68 = 10,103.95 : x
  2. Step 2: Convert to fraction form
    18,487.45/25,512.68 = 10,103.95/x
  3. Step 3: Cross multiply
    18,487.45x = 25,512.68 × 10,103.95
  4. Step 4: Simplify right side
    18,487.45x = 257,778,665.00
  5. Step 5: Solve for x
    x = 257,778,665.00/18,487.45
  6. Step 6: Final answer
    x = 13,943.44

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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.