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Finding the Fourth Proportional to 21,056.88, 29,059.12 and 11,626.08

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Solution

The fourth proportional to 21,056.88, 29,059.12 and 11,626.08 is: 16,044.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.88 : 29,059.12 = 11,626.08 : x
  2. Step 2: Convert to fraction form
    21,056.88/29,059.12 = 11,626.08/x
  3. Step 3: Cross multiply
    21,056.88x = 29,059.12 × 11,626.08
  4. Step 4: Simplify right side
    21,056.88x = 337,843,653.85
  5. Step 5: Solve for x
    x = 337,843,653.85/21,056.88
  6. Step 6: Final answer
    x = 16,044.34

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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.