Home / 21,687.19-29,923.50-12,611.14

Finding the Fourth Proportional to 21,687.19, 29,923.50 and 12,611.14

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Solution

The fourth proportional to 21,687.19, 29,923.50 and 12,611.14 is: 17,400.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687.19 : 29,923.50 = 12,611.14 : x
  2. Step 2: Convert to fraction form
    21,687.19/29,923.50 = 12,611.14/x
  3. Step 3: Cross multiply
    21,687.19x = 29,923.50 × 12,611.14
  4. Step 4: Simplify right side
    21,687.19x = 377,369,447.79
  5. Step 5: Solve for x
    x = 377,369,447.79/21,687.19
  6. Step 6: Final answer
    x = 17,400.57

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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.