Home / 21,156.20-29,161.68-16,672.52

Finding the Fourth Proportional to 21,156.20, 29,161.68 and 16,672.52

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Solution

The fourth proportional to 21,156.20, 29,161.68 and 16,672.52 is: 22,981.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.20 : 29,161.68 = 16,672.52 : x
  2. Step 2: Convert to fraction form
    21,156.20/29,161.68 = 16,672.52/x
  3. Step 3: Cross multiply
    21,156.20x = 29,161.68 × 16,672.52
  4. Step 4: Simplify right side
    21,156.20x = 486,198,693.03
  5. Step 5: Solve for x
    x = 486,198,693.03/21,156.20
  6. Step 6: Final answer
    x = 22,981.38

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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.