Home / 14,147.10-21,221.70-4,287.18

Finding the Fourth Proportional to 14,147.10, 21,221.70 and 4,287.18

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Solution

The fourth proportional to 14,147.10, 21,221.70 and 4,287.18 is: 6,431.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,147.10 : 21,221.70 = 4,287.18 : x
  2. Step 2: Convert to fraction form
    14,147.10/21,221.70 = 4,287.18/x
  3. Step 3: Cross multiply
    14,147.10x = 21,221.70 × 4,287.18
  4. Step 4: Simplify right side
    14,147.10x = 90,981,247.81
  5. Step 5: Solve for x
    x = 90,981,247.81/14,147.10
  6. Step 6: Final answer
    x = 6,431.09

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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.