Home / 21,247.42-31,822.64-10,161.94

Finding the Fourth Proportional to 21,247.42, 31,822.64 and 10,161.94

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Solution

The fourth proportional to 21,247.42, 31,822.64 and 10,161.94 is: 15,219.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.42 : 31,822.64 = 10,161.94 : x
  2. Step 2: Convert to fraction form
    21,247.42/31,822.64 = 10,161.94/x
  3. Step 3: Cross multiply
    21,247.42x = 31,822.64 × 10,161.94
  4. Step 4: Simplify right side
    21,247.42x = 323,379,758.32
  5. Step 5: Solve for x
    x = 323,379,758.32/21,247.42
  6. Step 6: Final answer
    x = 15,219.72

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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.