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Finding the Fourth Proportional to 18,479.55, 25,498 and 10,519.68

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Solution

The fourth proportional to 18,479.55, 25,498 and 10,519.68 is: 14,515.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479.55 : 25,498 = 10,519.68 : x
  2. Step 2: Convert to fraction form
    18,479.55/25,498 = 10,519.68/x
  3. Step 3: Cross multiply
    18,479.55x = 25,498 × 10,519.68
  4. Step 4: Simplify right side
    18,479.55x = 268,230,800.64
  5. Step 5: Solve for x
    x = 268,230,800.64/18,479.55
  6. Step 6: Final answer
    x = 14,515.01

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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.