Home / 21,343.80-29,455.18-11,914.12

Finding the Fourth Proportional to 21,343.80, 29,455.18 and 11,914.12

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Solution

The fourth proportional to 21,343.80, 29,455.18 and 11,914.12 is: 16,441.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.80 : 29,455.18 = 11,914.12 : x
  2. Step 2: Convert to fraction form
    21,343.80/29,455.18 = 11,914.12/x
  3. Step 3: Cross multiply
    21,343.80x = 29,455.18 × 11,914.12
  4. Step 4: Simplify right side
    21,343.80x = 350,932,549.14
  5. Step 5: Solve for x
    x = 350,932,549.14/21,343.80
  6. Step 6: Final answer
    x = 16,441.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.