Home / 21,121.04-29,153.52-12,174.52

Finding the Fourth Proportional to 21,121.04, 29,153.52 and 12,174.52

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Solution

The fourth proportional to 21,121.04, 29,153.52 and 12,174.52 is: 16,804.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121.04 : 29,153.52 = 12,174.52 : x
  2. Step 2: Convert to fraction form
    21,121.04/29,153.52 = 12,174.52/x
  3. Step 3: Cross multiply
    21,121.04x = 29,153.52 × 12,174.52
  4. Step 4: Simplify right side
    21,121.04x = 354,930,039.43
  5. Step 5: Solve for x
    x = 354,930,039.43/21,121.04
  6. Step 6: Final answer
    x = 16,804.58

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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.