Home / 21,077.20-29,092.32-12,125.68

Finding the Fourth Proportional to 21,077.20, 29,092.32 and 12,125.68

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Solution

The fourth proportional to 21,077.20, 29,092.32 and 12,125.68 is: 16,736.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.20 : 29,092.32 = 12,125.68 : x
  2. Step 2: Convert to fraction form
    21,077.20/29,092.32 = 12,125.68/x
  3. Step 3: Cross multiply
    21,077.20x = 29,092.32 × 12,125.68
  4. Step 4: Simplify right side
    21,077.20x = 352,764,162.78
  5. Step 5: Solve for x
    x = 352,764,162.78/21,077.20
  6. Step 6: Final answer
    x = 16,736.77

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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.