Home / 21,214.62-29,276.91-11,784.06

Finding the Fourth Proportional to 21,214.62, 29,276.91 and 11,784.06

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Solution

The fourth proportional to 21,214.62, 29,276.91 and 11,784.06 is: 16,262.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.62 : 29,276.91 = 11,784.06 : x
  2. Step 2: Convert to fraction form
    21,214.62/29,276.91 = 11,784.06/x
  3. Step 3: Cross multiply
    21,214.62x = 29,276.91 × 11,784.06
  4. Step 4: Simplify right side
    21,214.62x = 345,000,864.05
  5. Step 5: Solve for x
    x = 345,000,864.05/21,214.62
  6. Step 6: Final answer
    x = 16,262.41

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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.