Home / 21,253.42-29,330.10-11,821.98

Finding the Fourth Proportional to 21,253.42, 29,330.10 and 11,821.98

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Solution

The fourth proportional to 21,253.42, 29,330.10 and 11,821.98 is: 16,314.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.42 : 29,330.10 = 11,821.98 : x
  2. Step 2: Convert to fraction form
    21,253.42/29,330.10 = 11,821.98/x
  3. Step 3: Cross multiply
    21,253.42x = 29,330.10 × 11,821.98
  4. Step 4: Simplify right side
    21,253.42x = 346,739,855.60
  5. Step 5: Solve for x
    x = 346,739,855.60/21,253.42
  6. Step 6: Final answer
    x = 16,314.54

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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.