Home / 14,278.55-21,405.49-5,519.61

Finding the Fourth Proportional to 14,278.55, 21,405.49 and 5,519.61

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Solution

The fourth proportional to 14,278.55, 21,405.49 and 5,519.61 is: 8,274.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.55 : 21,405.49 = 5,519.61 : x
  2. Step 2: Convert to fraction form
    14,278.55/21,405.49 = 5,519.61/x
  3. Step 3: Cross multiply
    14,278.55x = 21,405.49 × 5,519.61
  4. Step 4: Simplify right side
    14,278.55x = 118,149,942.86
  5. Step 5: Solve for x
    x = 118,149,942.86/14,278.55
  6. Step 6: Final answer
    x = 8,274.65

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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.