Home / 21,154.72-29,194-11,723.68

Finding the Fourth Proportional to 21,154.72, 29,194 and 11,723.68

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Solution

The fourth proportional to 21,154.72, 29,194 and 11,723.68 is: 16,178.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.72 : 29,194 = 11,723.68 : x
  2. Step 2: Convert to fraction form
    21,154.72/29,194 = 11,723.68/x
  3. Step 3: Cross multiply
    21,154.72x = 29,194 × 11,723.68
  4. Step 4: Simplify right side
    21,154.72x = 342,261,113.92
  5. Step 5: Solve for x
    x = 342,261,113.92/21,154.72
  6. Step 6: Final answer
    x = 16,178.95

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Double scale
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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.