Home / 21,223.56-31,814.58-11,868.12

Finding the Fourth Proportional to 21,223.56, 31,814.58 and 11,868.12

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Solution

The fourth proportional to 21,223.56, 31,814.58 and 11,868.12 is: 17,790.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.56 : 31,814.58 = 11,868.12 : x
  2. Step 2: Convert to fraction form
    21,223.56/31,814.58 = 11,868.12/x
  3. Step 3: Cross multiply
    21,223.56x = 31,814.58 × 11,868.12
  4. Step 4: Simplify right side
    21,223.56x = 377,579,253.19
  5. Step 5: Solve for x
    x = 377,579,253.19/21,223.56
  6. Step 6: Final answer
    x = 17,790.57

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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.