Home / 14,215.25-21,296.22-11,890.19

Finding the Fourth Proportional to 14,215.25, 21,296.22 and 11,890.19

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Solution

The fourth proportional to 14,215.25, 21,296.22 and 11,890.19 is: 17,812.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.25 : 21,296.22 = 11,890.19 : x
  2. Step 2: Convert to fraction form
    14,215.25/21,296.22 = 11,890.19/x
  3. Step 3: Cross multiply
    14,215.25x = 21,296.22 × 11,890.19
  4. Step 4: Simplify right side
    14,215.25x = 253,216,110.73
  5. Step 5: Solve for x
    x = 253,216,110.73/14,215.25
  6. Step 6: Final answer
    x = 17,812.99

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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.