Home / 21,230.55-29,296.22-12,277.85

Finding the Fourth Proportional to 21,230.55, 29,296.22 and 12,277.85

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Solution

The fourth proportional to 21,230.55, 29,296.22 and 12,277.85 is: 16,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.55 : 29,296.22 = 12,277.85 : x
  2. Step 2: Convert to fraction form
    21,230.55/29,296.22 = 12,277.85/x
  3. Step 3: Cross multiply
    21,230.55x = 29,296.22 × 12,277.85
  4. Step 4: Simplify right side
    21,230.55x = 359,694,386.86
  5. Step 5: Solve for x
    x = 359,694,386.86/21,230.55
  6. Step 6: Final answer
    x = 16,942.30

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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.