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Finding the Fourth Proportional to 21,031.50, 29,023.50 and 11,600.04

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Solution

The fourth proportional to 21,031.50, 29,023.50 and 11,600.04 is: 16,008.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.50 : 29,023.50 = 11,600.04 : x
  2. Step 2: Convert to fraction form
    21,031.50/29,023.50 = 11,600.04/x
  3. Step 3: Cross multiply
    21,031.50x = 29,023.50 × 11,600.04
  4. Step 4: Simplify right side
    21,031.50x = 336,673,760.94
  5. Step 5: Solve for x
    x = 336,673,760.94/21,031.50
  6. Step 6: Final answer
    x = 16,008.07

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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.