Home / 14,165.20-21,247.80-12,634.30

Finding the Fourth Proportional to 14,165.20, 21,247.80 and 12,634.30

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Solution

The fourth proportional to 14,165.20, 21,247.80 and 12,634.30 is: 18,951.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,165.20 : 21,247.80 = 12,634.30 : x
  2. Step 2: Convert to fraction form
    14,165.20/21,247.80 = 12,634.30/x
  3. Step 3: Cross multiply
    14,165.20x = 21,247.80 × 12,634.30
  4. Step 4: Simplify right side
    14,165.20x = 268,451,079.54
  5. Step 5: Solve for x
    x = 268,451,079.54/14,165.20
  6. Step 6: Final answer
    x = 18,951.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.