Home / 14,112.71-21,168.86-3,439.11

Finding the Fourth Proportional to 14,112.71, 21,168.86 and 3,439.11

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Solution

The fourth proportional to 14,112.71, 21,168.86 and 3,439.11 is: 5,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,112.71 : 21,168.86 = 3,439.11 : x
  2. Step 2: Convert to fraction form
    14,112.71/21,168.86 = 3,439.11/x
  3. Step 3: Cross multiply
    14,112.71x = 21,168.86 × 3,439.11
  4. Step 4: Simplify right side
    14,112.71x = 72,802,000.57
  5. Step 5: Solve for x
    x = 72,802,000.57/14,112.71
  6. Step 6: Final answer
    x = 5,158.61

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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.