Home / 21,314.14-31,980.42-11,441.88

Finding the Fourth Proportional to 21,314.14, 31,980.42 and 11,441.88

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Solution

The fourth proportional to 21,314.14, 31,980.42 and 11,441.88 is: 17,167.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.14 : 31,980.42 = 11,441.88 : x
  2. Step 2: Convert to fraction form
    21,314.14/31,980.42 = 11,441.88/x
  3. Step 3: Cross multiply
    21,314.14x = 31,980.42 × 11,441.88
  4. Step 4: Simplify right side
    21,314.14x = 365,916,127.99
  5. Step 5: Solve for x
    x = 365,916,127.99/21,314.14
  6. Step 6: Final answer
    x = 17,167.76

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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.