Home / 21,214.12-29,274.97-11,782.69

Finding the Fourth Proportional to 21,214.12, 29,274.97 and 11,782.69

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Solution

The fourth proportional to 21,214.12, 29,274.97 and 11,782.69 is: 16,259.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.12 : 29,274.97 = 11,782.69 : x
  2. Step 2: Convert to fraction form
    21,214.12/29,274.97 = 11,782.69/x
  3. Step 3: Cross multiply
    21,214.12x = 29,274.97 × 11,782.69
  4. Step 4: Simplify right side
    21,214.12x = 344,937,896.27
  5. Step 5: Solve for x
    x = 344,937,896.27/21,214.12
  6. Step 6: Final answer
    x = 16,259.83

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Half scale
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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.