Home / 21,785.20-32,629.20-16,838.80

Finding the Fourth Proportional to 21,785.20, 32,629.20 and 16,838.80

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Solution

The fourth proportional to 21,785.20, 32,629.20 and 16,838.80 is: 25,220.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.20 : 32,629.20 = 16,838.80 : x
  2. Step 2: Convert to fraction form
    21,785.20/32,629.20 = 16,838.80/x
  3. Step 3: Cross multiply
    21,785.20x = 32,629.20 × 16,838.80
  4. Step 4: Simplify right side
    21,785.20x = 549,436,572.96
  5. Step 5: Solve for x
    x = 549,436,572.96/21,785.20
  6. Step 6: Final answer
    x = 25,220.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.