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Finding the Fourth Proportional to 18,478.60, 25,502.50 and 10,519.54

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Solution

The fourth proportional to 18,478.60, 25,502.50 and 10,519.54 is: 14,518.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.60 : 25,502.50 = 10,519.54 : x
  2. Step 2: Convert to fraction form
    18,478.60/25,502.50 = 10,519.54/x
  3. Step 3: Cross multiply
    18,478.60x = 25,502.50 × 10,519.54
  4. Step 4: Simplify right side
    18,478.60x = 268,274,568.85
  5. Step 5: Solve for x
    x = 268,274,568.85/18,478.60
  6. Step 6: Final answer
    x = 14,518.12

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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.